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: a foundation for representing and querying moving objects. authors: ralf hartmut g &#252; ting , michael h. b &#246; hlen , martin erwig , christian s. jensen , nikos a. lorentzos , markus schneider , michalis vazirgiannis. venue: acm transactions on database systems ( tods ). year: 2000