@Inproceedings{RíosViqueira01,
author = {Viqueira, J. R. and Lorentzos, N. A.},
title = {Spatio-temporal SQL Extension},
booktitle = {Advances in Informatics, 8th Panhellenic Conference on Informatics (PCI 2001) - LNCS 2563},
address = {Cyprus},
year = {2001},
pages = {50-63}
}