title: the aditi deductive database system. authors: kotagiri ramamohanarao , david b. kemp , jayen vaghani , tim s. leask , james harland , peter j. stuckey , zoltan somogyi. venue: vldb j.. year: 1994
title: an introduction to spatial database systems. authors: ralf hartmut g &#252; ting. venue: the vldb journal -- the international journal on very large data bases. year: 1994