title: a data model and data structures for moving objects databases. authors: markus schneider , enrico nardelli , luca forlizzi , ralf hartmut güting. venue: sigmod conference. year: 2000
title: cost models for overlapping and multiversion structures. authors: yufei tao , dimitris papadias , jun zhang. venue: acm transactions on database systems ( tods ). year: 2002