Spyros Sioutas Christos Makris Nectarios Kitsios George Lagogiannis John Tsaknakis Kostas Tsichlas Bill Vassiliadis Geometric Retrieval for Grid Points in the RAM Model. 1325-1353 2004 10 J. UCS 9 http://www.jucs.org/jucs_10_9/geometric_retrieval_for_grid db/journals/jucs/jucs10.html#SioutasMKLTTV04