Nicolas Spyratos

Cheikh Tidiane Dieng, Tao-Yuan Jen, Dominique Laurent, Nicolas Spyratos: Mining frequent conjunctive queries using functional and inclusion dependencies. VLDB J. 22(2): 125-150 (2013)

Tsuyoshi Sugibuchi, Anh Tuan Ly, Nicolas Spyratos: Metadata Inference for Description Authoring in a Document Composition Environment. IRCDL 2012: 69-80

Jérémie Julia, Yuzuru Tanaka, Nicolas Spyratos: Formalization of an RNA-inspired Middleware for Complex Smart Object Federation Scenarios. PECCS 2012: 96-105

Nicolas Spyratos, Tsuyoshi Sugibuchi, Jitao Yang: Personalizing Queries over Large Data Tables. ADBIS 2011: 271-284

Nicola Aloia, Cesare Concordia, Anne Marie van Gerwen, Preben Hansen, Micke Kuwahara, Anh Tuan Ly, Carlo Meghini, Nicolas Spyratos, Tsuyoshi Sugibuchi, Yuzuru Tanaka, Jitao Yang, Nicola Zeni: Design, Implementation and Evaluation of a User Generated Content Service for Europeana. TPDL 2011: 477-482

Ekaterina Simonenko, Nicolas Spyratos, Tsuyoshi Sugibuchi: A Model for Analyzing and Visualizing Tabular Data. FQAS 2011: 282-293

Jitao Yang, Tsuyoshi Sugibuchi, Nicolas Spyratos: Taxonomy Based Notification Service for the ASSETS Digital Library Platform. IRCDL 2011: 75-86

Dominique Laurent, Nicolas Spyratos: Rewriting aggregate queries using functional dependencies. MEDES 2011: 40-47

Tao-Yuan Jen, Dominique Laurent, Nicolas Spyratos: Computing Supports of Conjunctive Queries on Relational Tables with Functional Dependencies. Fundam. Inform. 99(3): 263-292 (2010)

Carlo Meghini, Nicolas Spyratos, Jitao Yang: A data model for digital libraries. Int. J. on Digital Libraries 11(1): 41-56 (2010)

Carlo Meghini, Nicolas Spyratos, Tsuyoshi Sugibuchi: Modelling Digital Libraries Based on Logic. ECDL 2010: 2-13

Nicolas Spyratos, Dimitris Kotzinos: Communicating through preferences. PETRA 2010

Yoann Pitarch, Dominique Laurent, Pascal Poncelet, Nicolas Spyratos: TIGER: Querying large tables through criteria extension. SoCPaR 2010: 111-118

Carlo Meghini, Nicolas Spyratos: Unifying the Concept of Collection in Digital Libraries. Advances in Intelligent Information Systems 2010: 197-224

Klaus P. Jantke, Aran Lunzer, Nicolas Spyratos, Yuzuru Tanaka (Eds.): Federation over the Web - International Workshop, Dagstuhl Castle, Germany, May 1-6, 2005. Revised Selected Papers. Lecture Notes in Computer Science 3847, Springer 2010, isbn 978-3-540-31018-1

Anastasia Analyti, Yannis Tzitzikas, Nicolas Spyratos: Specifying Valid Compound Terms in Interrelated Faceted Taxonomies. ER 2009: 360-373

Tao-Yuan Jen, Dominique Laurent, Nicolas Spyratos: Mining frequent conjunctive queries in star schemas. IDEAS 2009: 97-108

Jan Paralic, Frantisek Babic, Jozef Wagner, Ekaterina Simonenko, Nicolas Spyratos, Tsuyoshi Sugibuchi: Analyses of Knowledge Creation Processes Based on Different Types of Monitored Data. ISMIS 2009: 321-330

Tsuyoshi Sugibuchi, Nicolas Spyratos, Ekaterina Simonenko: A Framework to Analyze Information Visualization Based on the Functional Data Model. IV 2009: 18-24

Carlo Meghini, Yannis Tzitzikas, Nicolas Spyratos: Abduction for Accessing Information Sources. Fundam. Inform. 83(4): 355-387 (2008)

Mohand-Said Hacid, Nicolas Spyratos, Yuzuru Tanaka: Guest editors' introduction: special issue for ISIP 2005. J. Intell. Inf. Syst. 31(2): 109-110 (2008)

Carlo Meghini, Nicolas Spyratos: Synthesizing Monadic Predicates. J. Log. Comput. 18(6): 831-847 (2008)

Tao-Yuan Jen, Dominique Laurent, Nicolas Spyratos: Mining all frequent projection-selection queries from a relational table. EDBT 2008: 368-379

Carlo Meghini, Martin Doerr, Nicolas Spyratos: Managing Co-reference Knowledge for Data Integration. EJC 2008: 224-244

Periklis Georgiadis, Ioannis Kapantaidakis, Vassilis Christophides, Elhadji Mamadou Nguer, Nicolas Spyratos: Efficient Rewriting Algorithms for Preference Queries. ICDE 2008: 1101-1110

Elhadji Mamadou Nguer, Nicolas Spyratos: A user-friendly interface for evaluating preference queries over tabular data. SIGDOC 2008: 33-42

Yannis Tzitzikas, Anastasia Analyti, Nicolas Spyratos, Panos Constantopoulos: An algebra for specifying valid compound terms in faceted taxonomies. Data Knowl. Eng. 62(1): 1-40 (2007)

Yannis Tzitzikas, Vassilis Christophides, Giorgos Flouris, Dimitris Kotzinos, Hannu Markkanen, Dimitris Plexousakis, Nicolas Spyratos: Emergent Knowledge Artifacts for Supporting Trialogical E-Learning. IJWLTT 2(3): 19-41 (2007)

Anastasia Analyti, Manos Theodorakis, Nicolas Spyratos, Panos Constantopoulos: Contextualization as an independent abstraction mechanism for conceptual modeling. Inf. Syst. 32(1): 24-60 (2007)

Hanen Belhaj Frej, Philippe Rigaux, Nicolas Spyratos: Algorithmes de notification pour bibliothèques numériques. Ingénierie des Systèmes d'Information 12(1): 61-84 (2007)

Hanen Belhaj Frej, Philippe Rigaux, Nicolas Spyratos: Fast User Notification in Large-Scale Digital Libraries: Experiments and Results. ADBIS 2007: 343-358

Carlo Meghini, Nicolas Spyratos: Viewing Collections as Abstractions. DELOS Conference 2007: 207-217

Yeow Wei Choong, Arnaud Giacometti, Dominique Laurent, Patrick Marcel, Elsa Negre, Nicolas Spyratos: Context-based exploitation of data warehouses. EDA 2007: 131-146

Carlo Meghini, Nicolas Spyratos: Computing Intensions of Digital Library Collections. ICFCA 2007: 66-81

Periklis Georgiadis, Vassilis Christophides, Nicolas Spyratos: Designing personalized curricula based on student preferences. SIGDOC 2007: 55-62

Yannis Tzitzikas, Carlo Meghini, Nicolas Spyratos: A unified interaction scheme for information sources. J. Intell. Inf. Syst. 26(1): 75-93 (2006)

Hanen Belhaj Frej, Philippe Rigaux, Nicolas Spyratos: Matching Algorithms for User Notification in Digital Libraries. BDA 2006

Yannis Tzitzikas, Vassilis Christophides, Giorgos Flouris, Dimitris Kotzinos, Hannu Markkanen, Dimitris Plexousakis, Nicolas Spyratos: Trialogical E-Learning and Emergent Knowledge Artifacts. EC-TEL 2006: 703-708

Yannis Tzitzikas, Vassilis Christophides, Giorgos Flouris, Dimitris Kotzinos, Hannu Markkanen, Dimitris Plexousakis, Nicolas Spyratos: Emergent Knowledge Artifacts for Supporting Trialogical E-Learning. EC-TEL Workshops 2006

Nicolas Spyratos, Carlo Meghini: Preference-Based Query Tuning Through Refinement/Enlargement in a Formal Context. FoIKS 2006: 278-293

Nicolas Spyratos: A Functional Model for Data Analysis. FQAS 2006: 51-64

Carlo Meghini, Yannis Tzitzikas, Nicolas Spyratos: Abduction for Extending Incomplete Information Sources. SETN 2006: 267-278

Hanen Belhaj Frej, Philippe Rigaux, Nicolas Spyratos: User notification in taxonomy based digital libraries. SIGDOC 2006: 180-187

Yannis Tzitzikas, Anastasia Analyti, Nicolas Spyratos: Compound Term Composition Algebra: The Semantics. J. Data Semantics 2: 58-84 (2005)

Yannis Tzitzikas, Nicolas Spyratos, Panos Constantopoulos: Mediators over taxonomy-based information sources. VLDB J. 14(1): 112-136 (2005)

Mina Akaishi, Nicolas Spyratos, Koichi Hori, Yuzuru Tanaka: Connecting Keywords Through Pointer Paths over the Web. Federation over the Web 2005: 115-129

Nicolas Spyratos, Vassilis Christophides: Querying with Preferences in a Digital Library. Federation over the Web 2005: 130-142

Mina Akaishi, Nicolas Spyratos, Koichi Hori, Yuzuru Tanaka: Discovery of Narrativity on the WWW based on Perspective Information Access. EJC 2005: 245-252

Tao-Yuan Jen, Dominique Laurent, Nicolas Spyratos, Oumar Sy: Mining Frequent Queries in Star Schemes. EGC 2005: 331-342

Tao-Yuan Jen, Dominique Laurent, Nicolas Spyratos, Oumar Sy: Towards Mining Frequent Queries in Star Schemes. KDID 2005: 104-123

Cheikh Talibouya Diop, Arnaud Giacometti, Dominique Laurent, Nicolas Spyratos: Extraction itérative de requêtes fréquentes. Ingénierie des Systèmes d'Information 9(3-4): 83-108 (2004)

Kevin Keenoy, Alexandra Poulovassilis, Vassilis Christophides, George Loizou, Giorgos Kokkinidis, George Samaras, Nicolas Spyratos: Report on the Workshop on Metadata Management in Grid and Peer-to-Peer Systems, London, December 16, 2003. SIGMOD Record 33(3): 96-100 (2004)

Yann Loyer, Nicolas Spyratos, Daniel Stamate: Hypothesis-based semantics of logic programs in multivalued logics. ACM Trans. Comput. Log. 5(3): 508-527 (2004)

Philippe Rigaux, Nicolas Spyratos: Metadata Inference for Document Retrieval in a Distributed Repository. ASIAN 2004: 418-436

Yann Loyer, Nicolas Spyratos: Knowledge Integration in Rule-based Information Sources. BDA 2004: 365-384

Cheikh Talibouya Diop, Arnaud Giacometti, Dominique Laurent, Nicolas Spyratos: Computation of Mining Queries: An Algebraic Approach. Constraint-Based Mining and Inductive Databases 2004: 102-126

Mina Akaishi, Nicolas Spyratos: Discovering Implicit Relationships in a Web of Contexts. Intuitive Human Interfaces for Organizing and Accessing Intellectual Assets 2004: 175-188

Birahim Gueye, Philippe Rigaux, Nicolas Spyratos: Annotation automatique de documents XML. EGC 2004: 525-536

Yannis Tzitzikas, Carlo Meghini, Nicolas Spyratos: Towards a Generalized Interaction Scheme for Information Access. FoIKS 2004: 291-301

Yannis Tzitzikas, Carlo Meghini, Nicolas Spyratos: A Unifying Framework for Flexible Information Access in Taxonomy-Based Sources. FQAS 2004: 161-174

Kevin Keenoy, Alexandra Poulovassilis, Vassilis Christophides, Philippe Rigaux, George Papamarkos, Aimilia Magkanaraki, Miltos Stratakis, Nicolas Spyratos, Peter T. Wood: Personalisation Services for Self E-learning Networks. ICWE 2004: 215-219

Birahim Gueye, Philippe Rigaux, Nicolas Spyratos: Taxonomy-Based Annotation of XML Documents: Application to eLearning Resources. SETN 2004: 33-42

Dominique Laurent, Viet Phan Luong, Nicolas Spyratos: Querying Weak Instances Under Extension Chase Semantics: A Complete Solution. Int. J. Comput. Math. 80(5): 591-613 (2003)

Yann Loyer, Nicolas Spyratos, Daniel Stamate: Parametrized semantics of logic programs--a unifying framework. Theor. Comput. Sci. 308(1-3): 429-447 (2003)

Yannis Tzitzikas, Anastasia Analyti, Nicolas Spyratos: The Semantics of the Compound Term Composition Algebra. CoopIS/DOA/ODBASE 2003: 970-985

Yannis Tzitzikas, Anastasia Analyti, Nicolas Spyratos, Panos Constantopoulos: An Algebraic Approach for Specifying Compound Terms in Faceted Taxonomies. EJC 2003: 67-87

Mina Akaishi, Nicolas Spyratos, Yuzuru Tanaka: Contextual Search in Large Collections of Information Resources. EJC 2003: 295-302

Yannis Tzitzikas, Carlo Meghini, Nicolas Spyratos: Taxonomy-Based Conceptual Modeling for Peer-to-Peer Networks. ER 2003: 446-460

Mina Akaishi, Makoto Ohigashi, Nicolas Spyratos, Yuzuru Tanaka: Information Access Space Framework over Contextualized Information Base. IV 2003: 414-420

Carlo Meghini, Yannis Tzitzikas, Nicolas Spyratos: An Abduction-Based Method for Index Relaxation in Taxonomy-Based Sources. MFCS 2003: 592-601

Manos Theodorakis, Anastasia Analyti, Panos Constantopoulos, Nicolas Spyratos: A theory of contexts in information bases. Inf. Syst. 27(3): 151-191 (2002)

Tao-Yuan Jen, Nicolas Spyratos, Yuzuru Tanaka: Règles d'association significatives. BDA 2002

Yann Loyer, Nicolas Spyratos: Sémantique des programmes Datalog avec négation sous hypothèses non-uniformes. BDA 2002

Yannis Tzitzikas, Nicolas Spyratos, Panos Constantopoulos, Anastasia Analyti: Extended Faceted Ontologies. CAiSE 2002: 778-781

Cheikh Talibouya Diop, Arnaud Giacometti, Dominique Laurent, Nicolas Spyratos: Composition of Mining Contexts for Efficient Extraction of Association Rules. EDBT 2002: 106-123

Nicolas Spyratos, Yannis Tzitzikas, Vassilis Christophides: On Personalizing the Catalogs of Web Portals. FLAIRS Conference 2002: 430-434

Yann Loyer, Nicolas Spyratos: Hypothesis-Founded Semantics for Datalog Programs with Negation. MFCS 2002: 483-494

Yannis Tzitzikas, Nicolas Spyratos, Panos Constantopoulos: Query Translation for Mediators over Ontology-Based Information Sources. SETN 2002: 423-436

Yannis Tzitzikas, Nicolas Spyratos, Panos Constantopoulos, Anastasia Analyti: Extended Faceted Taxonomies for Web Catalogs. WISE 2002: 192-204

Michael I. Dekhtyar, Alexander Ja. Dikovsky, Sergey Dudakov, Nicolas Spyratos: Maximal state independent approximations to minimal real change. Ann. Math. Artif. Intell. 33(2-4): 157-204 (2001)

Dominique Laurent, Jens Lechtenbörger, Nicolas Spyratos, Gottfried Vossen: Monotonic complements for independent data warehouses. VLDB J. 10(4): 295-315 (2001)

Cheikh Talibouya Diop, Arnaud Giacometti, Dominique Laurent, Nicolas Spyratos: Extraction incrémentale de règles d'association par combinaison de tâches d'extraction. BDA 2001

Yannis Tzitzikas, Panos Constantopoulos, Nicolas Spyratos: Mediators over Ontology-Based Information Sources. WISE (1) 2001: 31-40

Yann Loyer, Nicolas Spyratos, Daniel Stamate: Hypotheses Founded Semantics of Logic Programs for Information Integration in Multi-Valued Logics. CoRR cs.LO/0111059 (2001)

Anastasia Analyti, Nicolas Spyratos, Panos Constantopoulos: Deriving and Retrieving Contextual Categorical Information through Instance Inheritance. Fundam. Inform. 44(4): 321-351 (2000)

Arnaud Giacometti, Dominique Laurent, Cheikh Talibouya Diop, Nicolas Spyratos: La découverte de règles d'association entre vues : vers un processus d'extraction incrémental. BDA 2000

Michael I. Dekhtyar, Alexander Ja. Dikovsky, Sergey Dudakov, Nicolas Spyratos: Maximal Expansions of Database Updates. FoIKS 2000: 72-87

Yann Loyer, Nicolas Spyratos, Daniel Stamate: Hypothesis Support for Information Integration in Four-Valued Logics. IFIP TCS 2000: 536-548

Yann Loyer, Nicolas Spyratos, Daniel Stamate: Integration of Information in Four-Valued Logics under Non-Uniform Assumptions. ISMVL 2000: 185-

Yann Loyer, Nicolas Spyratos, Daniel Stamate: Test d'hypothèses pour l'intégration d'information en logique à quatre valeurs. JFPLC 2000: 265-

Yann Loyer, Nicolas Spyratos, Daniel Stamate: Computing and Comparing Semantics of Programs in Multi-valued Logics. CoRR cs.LO/0002013 (2000)

Manos Theodorakis, Anastasia Analyti, Panos Constantopoulos, Nicolas Spyratos: Contextualization as an Abstraction Mechanism for Conceptual Modelling. ER 1999: 475-489

Dominique Laurent, Jens Lechtenbörger, Nicolas Spyratos, Gottfried Vossen: Complements for Data Warehouses. ICDE 1999: 490-499

Michael I. Dekhtyar, Alexander Ja. Dikovsky, Nicolas Spyratos: Incremental Expansion of Database Updates Through Integrity Constraints. JFPLC 1999: 189-204

Michael I. Dekhtyar, Alexander Ja. Dikovsky, Sergey Dudakov, Nicolas Spyratos: Monotone Expansion of Updates in Logical Databases. LPNMR 1999: 132-146

Yann Loyer, Nicolas Spyratos, Daniel Stamate: Computing and Comparing Semantics of Programs in Four-Valued Logics. MFCS 1999: 59-69

Dominique Laurent, Viet Phan Luong, Nicolas Spyratos: Updating Intensional Predicates in Deductive Databases. Data Knowl. Eng. 26(1): 37-70 (1998)

Anastasia Analyti, Nicolas Spyratos, Panos Constantopoulos: Deriving Semantic Information through Property Covering and Inheritance. Data Knowl. Eng. 28(1): 3-30 (1998)

Anastasia Analyti, Nicolas Spyratos, Panos Constantopoulos: On the Semantics of a Semantic Network. Fundam. Inform. 36(2-3): 109-144 (1998)

Anastasia Analyti, Panos Constantopoulos, Nicolas Spyratos: Specialization by Restriction and Schema Derivations. Inf. Syst. 23(1): 1-38 (1998)

Mirian Halfeld Ferrari Alves, Dominique Laurent, Nicolas Spyratos: Update Rules in Datalog Programs. J. Log. Comput. 8(6): 745-775 (1998)

A. Faye, Arnaud Giacometti, Dominique Laurent, Nicolas Spyratos: Mining Significant Rules from Databases. Networking and Information Systems 1(6): 653-682 (1998)

A. Faye, Arnaud Giacometti, Dominique Laurent, Nicolas Spyratos: Learning rules from facts in deductive databases. BDA 1998

Manos Theodorakis, Anastasia Analyti, Panos Constantopoulos, Nicolas Spyratos: Context in Information Bases. CoopIS 1998: 260-270

Anastasia Analyti, Nicolas Spyratos, Panos Constantopoulos, Martin Doerr: Inheritance under Participation Constraints and Disjointness. EJC 1998: 254-274

Michael I. Dekhtyar, Alexander Ja. Dikovsky, Nicolas Spyratos: On Logically Justified Updates. IJCSLP 1998: 250-264

Yann Loyer, Nicolas Spyratos, Daniel Stamate: Unification des sémantiques usuelles de programmes logiques. JFPLC 1998: 135-150

Dominique Laurent, Viet Phan Luong, Nicolas Spyratos: The Use of Deleted Tuples in Database, Querying and Updating. Acta Inf. 34(12): 905-925 (1997)

S. Kazem Lellahi, Rachid Souah, Nicolas Spyratos: An Algebraic Query Language for Object-Oriented Data Models. DEXA 1997: 519-528

Anastasia Analyti, Nicolas Spyratos, Panos Constantopoulos: Property Covering: A Powerful Construct for Schema Derivations. ER 1997: 271-284

Gösta Grahne, Nicolas Spyratos, Daniel Stamate: Semantics and Containment with Internal and External Conjunctions. ICDT 1997: 71-82

Michael I. Dekhtyar, Alexander Ja. Dikovsky, Nicolas Spyratos: On Conservative Enforced Updates. LPNMR 1997: 244-257

S. Kazem Lellahi, Nicolas Spyratos, M'Bayang Thiam: Object Functional Dependencies and the Semantics of Class Extensions. BDA 1996: 99-118

Mirian Halfeld Ferrari Alves, Synnöve Kekkonen-Moneta, Dominique Laurent, Nicolas Spyratos: Point fixe alterné et bases de données Datalog étendues. JFPLC 1996: 33-48

Nicolas Spyratos, Daniel Stamate: Bases de données avec informations incertaines. Sémantique et mises à jour. JFPLC 1996: 49-

Eugénie Foustoucos, S. Kazem Lellahi, Nicolas Spyratos: An Algebraic semantics for Datalog. JFPLC 1995: 225-239

Mirian Halfeld Ferrari Alves, Dominique Laurent, Nicolas Spyratos: Règles de mises à jour et programmes Datalog^neg. JFPLC 1995: 241-254

Mirian Halfeld Ferrari Alves, Dominique Laurent, Nicolas Spyratos: Update Rules in Datalog Programs. LPNMR 1995: 71-84

Dominique Laurent, Nicolas Spyratos: A Partition Model Approach to Updating Universal Scheme Interfaces. IEEE Trans. Knowl. Data Eng. 6(2): 316-330 (1994)

Mirian Halfeld Ferrari Alves, Dominique Laurent, Nicolas Spyratos: Passive and Active Rules in Deductive Databases. MFCS 1994: 383-392

Dominique Laurent, Viet Phan Luong, Nicolas Spyratos: Database Updating Revisited. DOOD 1993: 296-309

Dominique Laurent, Viet Phan Luong, Nicolas Spyratos: Updating Intensional Predicates in Deductive Databases. ICDE 1993: 14-21

Dominique Laurent, Viet Phan Luong, Nicolas Spyratos: Deleted Tuples are Useful when Updating through Universal Scheme Interfaces. ICDE 1992: 420-427

S. Kazem Lellahi, Nicolas Spyratos: Towards a Categorial Data Model Supporting Structured Objects and Inheritance. East/West Database Workshop 1990: 86-105

Dominique Laurent, Nicolas Spyratos: Introducing Negative Information in Relational Databases. MFCS 1988: 424-432

Dominique Laurent, Nicolas Spyratos: Partition Semantics for Incomplete Information in Relational Databases. SIGMOD Conference 1988: 66-73

Christophe Lécluse, Nicolas Spyratos: Implementing Queries and Updates on Universal Scheme Interfaces. VLDB 1988: 62-75

Nicolas Spyratos: The Partition Model: A Deductive Database Model. ACM Trans. Database Syst. 12(1): 1-37 (1987)

Christophe Lécluse, Nicolas Spyratos: La sémantique des requêtes et des mises à jour dans les bases de données relationnelles. BDA 1987: 305-322

Nicolas Spyratos, Christophe Lécluse: Incorporating Functional Dependencies in Deductive Query Answering. ICDE 1987: 658-664

Stavros S. Cosmadakis, Paris C. Kanellakis, Nicolas Spyratos: Partition Semantics for Relations. J. Comput. Syst. Sci. 33(2): 203-233 (1986)

François Bancilhon, Nicolas Spyratos: Algebraic Versus Probabilistic Independence in Data Bases. PODS 1985: 149-153

Stavros S. Cosmadakis, Paris C. Kanellakis, Nicolas Spyratos: Partition Semantics for Relations. PODS 1985: 261-275

Tomasz Imielinski, Nicolas Spyratos: On Lossless Transformation of Database Schemes not Necessarily Satisfying Universal Instance Assumption. PODS 1984: 258-265

Serge Abiteboul, M. Spyratos, Nicolas Spyratos: Information Theoretic Aspects of Data Bases. PODS 1983: 312-316

Alessandro D'Atri, Marina Moscarini, Nicolas Spyratos: Answering Queries in Relational Databases. SIGMOD Conference 1983: 173-177

Nicolas Spyratos: An Operational Approach to Data Bases. PODS 1982: 212-220

François Bancilhon, Nicolas Spyratos: Update Semantics of Relational Views. ACM Trans. Database Syst. 6(4): 557-575 (1981)

François Bancilhon, Nicolas Spyratos: Independent Components of Databases. VLDB 1981: 398-408

Nicolas Spyratos: Translation Structures of Relational Views. VLDB 1980: 411-416

Nicolas Spyratos, François Bancilhon: Name Independence and Database Abstraction in the Relational Model. MFCS 1978: 497-505

François Bancilhon, Nicolas Spyratos: Protection of Information in Relational Data Bases. VLDB 1977: 494-500