Vladimir D. Tonchev

Dieter Jungnickel, Vladimir D. Tonchev: New invariants for incidence structures. Des. Codes Cryptography 68(1-3): 163-177 (2013)

Yuichiro Fujiwara, Vladimir D. Tonchev: High-Rate Self-Synchronizing Codes. IEEE Transactions on Information Theory 59(4): 2328-2335 (2013)

Yuichiro Fujiwara, Vladimir D. Tonchev: A Characterization of Entanglement-Assisted Quantum Low-Density Parity-Check Codes. IEEE Transactions on Information Theory 59(6): 3347-3353 (2013)

Yuichiro Fujiwara, Vladimir D. Tonchev, Tony W. H. Wong: Algebraic techniques in designing quantum synchronizable codes. CoRR abs/1304.0502 (2013)

Dieter Jungnickel, Vladimir D. Tonchev: A Hamada type characterization of the classical geometric designs. Des. Codes Cryptography 65(1-2): 15-28 (2012)

David Clark, Vladimir D. Tonchev: Nonbinary quantum codes derived from finite geometries. Finite Fields and Their Applications 18(1): 63-69 (2012)

Yuichiro Fujiwara, Vladimir D. Tonchev: A direct product construction for high-rate self-synchronizing codes. ISITA 2012: 226-229

Yuichiro Fujiwara, Vladimir D. Tonchev: High-rate self-synchronizing codes. CoRR abs/1208.5216 (2012)

Dean Crnkovic, Vladimir D. Tonchev (Eds.): Information Security, Coding Theory and Related Combinatorics. NATO Science for Peace and Security Series - D: Information and Communication Security 29, IOS Press 2011, isbn 978-1-60750-662-1

David Clark, Dieter Jungnickel, Vladimir D. Tonchev: Affine geometry designs, polarities, and Hamada's conjecture. J. Comb. Theory, Ser. A 118(1): 231-239 (2011)

Vladimir D. Tonchev: Finite geometry designs, codes, and Hamada's conjecture. Information Security, Coding Theory and Related Combinatorics 2011: 437-448

Yuichiro Fujiwara, Vladimir D. Tonchev: A characterization of entanglement-assisted quantum low-density parity-check codes. CoRR abs/1108.0679 (2011)

Masaaki Harada, Clement W. H. Lam, Akihiro Munemasa, Vladimir D. Tonchev: Classification of Generalized Hadamard Matrices H(6,3) and Quaternary Hermitian Self-Dual Codes of Length 18. Electr. J. Comb. 17(1) (2010)

Dieter Jungnickel, Vladimir D. Tonchev: The number of designs with geometric parameters grows exponentially. Des. Codes Cryptography 55(2-3): 131-140 (2010)

Yuichiro Fujiwara, David Clark, Peter Vandendriessche, Maarten De Boeck, Vladimir D. Tonchev: Entanglement-assisted quantum low-density parity-check codes. CoRR abs/1008.4747 (2010)

Dieter Jungnickel, Vladimir D. Tonchev: Polarities, quasi-symmetric designs, and Hamada's conjecture. Des. Codes Cryptography 51(2): 131-140 (2009)

Vladimir D. Tonchev: Generalized weighing matrices and self-orthogonal codes. Discrete Mathematics 309(14): 4697-4699 (2009)

Hao Wang, Vladimir D. Tonchev: An algorithm for optimal comma free codes with isomorphism rejection. SAC 2009: 1007-1008

Vladimir D. Tonchev: Combinatorial Designs and Code Synchronization. Algebraic Aspects of Digital Communications 2009: 81-99

Vassili C. Mavron, T. P. McDonough, Vladimir D. Tonchev: On affine designs and Hadamard designs with line spreads. Discrete Mathematics 308(13): 2742-2750 (2008)

Yukiyasu Mutoh, Vladimir D. Tonchev: Difference systems of sets and cyclotomy. Discrete Mathematics 308(14): 2959-2969 (2008)

Vladimir D. Tonchev: Quantum codes from caps. Discrete Mathematics 308(24): 6368-6372 (2008)

Vladimir D. Tonchev: Steiner systems for two-stage disjunctive testing. J. Comb. Optim. 15(1): 1-6 (2008)

Vladimir D. Tonchev, Hao Wang: An algorithm for optimal difference systems of sets. J. Comb. Optim. 14(2-3): 165-175 (2007)

Masakazu Jimbo, Miwako Mishima, Susan Janiszewski, Amin Y. Teymorian, Vladimir D. Tonchev: On Conflict-Avoiding Codes of Length n=4m for Three Active Users. IEEE Transactions on Information Theory 53(8): 2732-2742 (2007)

Ryoh Fuji-Hara, Akihiro Munemasa, Vladimir D. Tonchev: Hyperplane partitions and difference systems of sets. J. Comb. Theory, Ser. A 113(8): 1689-1698 (2006)

Vladimir D. Tonchev, Hao Wang: Optimal Difference Systems of Sets with Multipliers. CSR 2006: 612-618

Masaaki Harada, Clement W. H. Lam, Vladimir D. Tonchev: Symmetric (4,4)-Nets and Generalized Hadamard Matrices Over Groups of Order 4. Des. Codes Cryptography 34(1): 71-87 (2005)

Vladimir D. Tonchev: Affine designs and linear orthogonal arrays. Discrete Mathematics 294(1-2): 219-222 (2005)

Vladimir D. Tonchev: Partitions of difference sets and code synchronization. Finite Fields and Their Applications 11(3): 601-621 (2005)

Akihiro Munemasa, Vladimir D. Tonchev: A new quasi-symmetric 2-(56, 16, 6) design obtained from codes. Discrete Mathematics 284(1-3): 231-234 (2004)

Vladimir D. Tonchev: On generalized Hadamard matrices of minimum rank. Finite Fields and Their Applications 10(4): 522-529 (2004)

Vladimir D. Tonchev: A Note on MDS Codes, n-Arcs and Complete Designs. Des. Codes Cryptography 29(1-3): 247-250 (2003)

Masaaki Harada, Vladimir D. Tonchev: Self-orthogonal Codes from Symmetric Designs with Fixed-point-free Auto-morphisms. Discrete Mathematics 264(1-3): 81-90 (2003)

Anton Betten, Dieter Betten, Vladimir D. Tonchev: Unitals and codes. Discrete Mathematics 267(1-3): 23-33 (2003)

Vladimir D. Tonchev: Error-correcting codes from graphs. Discrete Mathematics 257(2-3): 549-557 (2002)

Vladimir D. Tonchev: A Varshamov-Gilbert bound for a class of formally self-dual codes and related quantum codes. IEEE Transactions on Information Theory 48(4): 975-977 (2002)

Zvonimir Janko, Hadi Kharaghani, Vladimir D. Tonchev: The Existence of a Bush-Type Hadamard Matrix of Order 324 and Two New Infinite Classes of Symmetric Designs. Des. Codes Cryptography 24(2): 225-232 (2001)

Dieter Jungnickel, Vladimir D. Tonchev: Perfect Codes and Balanced Generalized Weighing Matrices, II. Electronic Notes in Discrete Mathematics 6: 113-122 (2001)

Vladimir D. Tonchev: A Mass Formula for Steiner Triple Systems STS(2ⁿ-1) of 2-Rank 2ⁿ-n. J. Comb. Theory, Ser. A 95(2): 197-208 (2001)

Stoicho D. Stoichev, Vladimir D. Tonchev: Unital designs in planes of order 16. Discrete Applied Mathematics 102(1-2): 151-158 (2000)

Clement W. H. Lam, Sigmund Lam, Vladimir D. Tonchev: Bounds on the Number of Affine, Symmetric, and Hadamard Designs and Matrices. J. Comb. Theory, Ser. A 92(2): 186-196 (2000)

Vladimir D. Tonchev: Linear Perfect Codes and a Characterization of the Classical Designs. Des. Codes Cryptography 17(1-3): 121-128 (1999)

Gary McGuire, Vladimir D. Tonchev, Harold N. Ward: Characterizing the Hermitian and Ree Unitals on 28 Points. Des. Codes Cryptography 13(1): 57-61 (1998)

David B. Jaffe, Vladimir D. Tonchev: Computing Linear Codes and Unitals. Des. Codes Cryptography 14(1): 39-52 (1998)

Zvonimir Janko, Vladimir D. Tonchev: New Designs with Block Size 7. J. Comb. Theory, Ser. A 83(1): 152-157 (1998)

Vladimir D. Tonchev: Maximum Disjoint Bases and Constant-Weight Codes. IEEE Transactions on Information Theory 44(1): 333-334 (1998)

Marijn van Eupen, Vladimir D. Tonchev: Linear Codes and the Existence of a Reversible Hadamard Difference Set in Z₂xZ₂xZ⁴₅. J. Comb. Theory, Ser. A 79(1): 161-167 (1997)

Vladimir D. Tonchev: Binary codes derived from the Hoffman-Singleton and Higman-Sims graphs. IEEE Transactions on Information Theory 43(3): 1021-1025 (1997)

Alphonse Baartmans, Ivan N. Landjev, Vladimir D. Tonchev: On the Binary Codes of Steiner Triple Systems. Des. Codes Cryptography 8(1-2): 29-43 (1996)

Willem H. Haemers, Vladimir D. Tonchev: Spreads in Strongly Regular Graphs. Des. Codes Cryptography 8(1-2): 145-157 (1996)

Vladimir D. Tonchev: Special Issue Containing Papers Presented at the Second Upper Michigan Combinatorics Workshop on Designs, Codes and Geometries - Preface. Des. Codes Cryptography 9(1): 5-6 (1996)

Vladimir D. Tonchev: The uniformly packed binary [27, 21, 3] and [35, 29, 3] codes. Discrete Mathematics 149(1-3): 283-288 (1996)

Vladimir D. Tonchev, Vassil Y. Yorgov: The existence of certain extremal [54, 27, 10] self-dual codes. IEEE Transactions on Information Theory 42(5): 1628-1631 (1996)

Clement W. H. Lam, Larry H. Thiel, Vladimir D. Tonchev: On Quasi-Symmetric 2-(28, 12, 11) and 2-(36, 16, 12) Designs. Des. Codes Cryptography 5(1): 43-55 (1995)

W. Cary Huffman, Vladimir D. Tonchev: The Existence of Extremal Self-Dual [50, 25, 10] Codes and Quasi-Symmetric 2-(49, 9, 6) Designs. Des. Codes Cryptography 6(2): 97-106 (1995)

Masaaki Harada, Vladimir D. Tonchev: Singly-Even Self-Dual Codes and Hadamard Matrices. AAECC 1995: 279-284

Christopher Parker, Edward Spence, Vladimir D. Tonchev: Designs with the Symmetric Difference Property on 64 Points and Their Groups. J. Comb. Theory, Ser. A 67(1): 23-43 (1994)

Willem H. Haemers, Christopher Parker, Vera Pless, Vladimir D. Tonchev: A Design and a Code Invariant under the Simple Group Co₃. J. Comb. Theory, Ser. A 62(2): 225-233 (1993)

Jack H. van Lint, Vladimir D. Tonchev: A Class of Non-embeddable Designs. J. Comb. Theory, Ser. A 62(2): 252-260 (1993)

Vera Pless, Vladimir D. Tonchev, Jeffrey S. Leon: On the existence of a certain (64, 32, 12) extremal code. IEEE Transactions on Information Theory 39(1): 214-215 (1993)

Charles J. Colbourn, Eric Mendelsohn, Cheryl E. Praeger, Vladimir D. Tonchev: Concerning Multiplier Automorphisms of Cyclic Steiner Triple Systems. Des. Codes Cryptography 2(3): 237-251 (1992)

Vladimir D. Tonchev: Some small non-embeddable designs. Discrete Mathematics 106-107: 489-492 (1992)

Vladimir D. Tonchev, Scott A. Vanstone: On Kirkman triple systems of order 33. Discrete Mathematics 106-107: 493-496 (1992)

Edward Spence, Vladimir D. Tonchev: Extremal self-dual codes from symmetric designs. Discrete Mathematics 110(1-3): 265-268 (1992)

Dieter Jungnickel, Vladimir D. Tonchev: On Symmetric and Quasi-Symmetric Designs with the Symmetric Difference Property and Their Codes. J. Comb. Theory, Ser. A 59(1): 40-50 (1992)

Vladimir D. Tonchev: Self-dual codes and Hadamard matrices. Discrete Applied Mathematics 33(1-3): 235-240 (1991)

Dieter Jungnickel, Vladimir D. Tonchev: Exponential Number of Quasi-Symmetric SDP Designs and Codes Meeting. Des. Codes Cryptography 1(3): 247-253 (1991)

Zvonimir Janko, Vladimir D. Tonchev: Cyclic 2-(91, 6, 1) designs with multiplier automorphisms. Discrete Mathematics 97(1-3): 265-268 (1991)

Frans C. Bussemaker, Vladimir D. Tonchev: Extremal doubly-even codes of length 40 derived from Hadamard matrices of order 20. Discrete Mathematics 82(3): 317-321 (1990)

Stoyan N. Kapralov, Vladimir D. Tonchev: Extremal doubly-even codes of length 64 derived from symmetric designs. Discrete Mathematics 83(2-3): 285-289 (1990)

Frans C. Bussemaker, Vladimir D. Tonchev: New extremal doubly-even codes of length 56 derived from Hadamard matrices of order 28. Discrete Mathematics 76(1): 45-49 (1989)

Ivan N. Landgev, Vladimir D. Tonchev: Automorphisms of 2-(22, 8, 4) designs. Discrete Mathematics 77(1-3): 177-189 (1989)

Vladimir D. Tonchev: Self-orthogonal designs and extremal doubly even codes. J. Comb. Theory, Ser. A 52(2): 197-205 (1989)

Stefan M. Dodunekov, Krassimir N. Manev, Vladimir D. Tonchev: On the covering radius of binary [14, 6] codes containing the all-one vector. IEEE Transactions on Information Theory 34(3): 591-593 (1988)

Vladimir D. Tonchev: Transitive Steiner triple systems of order 25. Discrete Mathematics 67(2): 211-214 (1987)

Vera Pless, Vladimir D. Tonchev: Self-dual codes over GF(7). IEEE Transactions on Information Theory 33(5): 723-727 (1987)

Vladimir D. Tonchev: Quasi-symmetric 2-(31, 7, 7) designs and a revision of Hamada's conjecture. J. Comb. Theory, Ser. A 42(1): 104-110 (1986)

Vladimir D. Tonchev: A characterization of designs related to dodecads in the witt system S(5, 8, 24). J. Comb. Theory, Ser. A 43(2): 219-227 (1986)

Vladimir D. Tonchev: Hadamard Matrices of Order 28 with Automorphisms of Order 7. J. Comb. Theory, Ser. A 40(1): 62-81 (1985)

Vladimir D. Tonchev: The isomorphism of the Cohen, Haemers-van Lint and De Clerck-Dye-Thas partial geometries. Discrete Mathematics 49(2): 213-217 (1984)

Jack H. van Lint, Vladimir D. Tonchev: Nonembeddable Quasi-residual Designs with Large K. J. Comb. Theory, Ser. A 37(3): 359-362 (1984)

Vladimir D. Tonchev: Hadamard Matrices of Order 28 with Automorphisms of Order 13. J. Comb. Theory, Ser. A 35(1): 43-57 (1983)

Vladimir D. Tonchev: On the Mutual Embeddability of (2k, k, k - 1) and (2k - 1, k, k) Quasi-Residual Designs. J. Comb. Theory, Ser. A 29(3): 329-335 (1980)

Jordan D. Denev, Vladimir D. Tonchev: On the number of equivalence classes of Boolean functions under a transformation group (Corresp.). IEEE Transactions on Information Theory 26(5): 625-626 (1980)