@INPROCEEDINGS{SPT2004,
AUTHOR = "Jimeng Sun and Dimitris Papadias and Yufei Tao and Bin Liu",
TITLE = "Querying about the Past, the Present and the Future in Spatio-Temporal Databases",
BOOKTITLE = "IEEE International Conference on Data Engineering (ICDE)",
YEAR = "2004",
page = "202-213"
}