Hans Hermann Brüggemann. Interaction of Authorities and Acquaintances in the DORIS privacy model of data. In János Demetrovics, Bernhard Thalheim, editors, MFDBS 89, 2nd Symposium on Mathematical Fundamentals of Database Systems, Visegrád, Hungary, June 26-30, 1989. Volume 364 of Lecture Notes in Computer Science, pages 85-99, Springer, 1989. [doi]
Abstract is missing.