9. WG 1983: Haus Ohrbeck (near Osnabrück), Germany

Manfred Nagl, Jürgen Perl (Eds.): Proceedings WG '83, Workshop on Graphtheoretic Concepts in Computer Science. Trauner, Linz, 1984, 397 pages, ISBN 3-853-20311-6

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Klaus Hinrichs, Jürg Nievergelt: The Grid File: A Data Structure to Support Proximity Queries on Spatial Objects. 100-113