Elbassioni, Khaled Algorithms and Complexity, MPI for Informatics, Max Planck Society;
Elmasry, Amr Algorithms and Complexity, MPI for Informatics, Max Planck Society;
Elbassioni, K., Elmasry, A., & Kamel, I. (2005). An Indexing Method for Answering Queries on Moving Objects. Distributed and Parallel Databases, 17, 215-249.