A spatiotemporal database prototype for managing volumetric surface movement data in virtual GIS / ανά Mohd. Shafry Mohd. Rahim, author, Abdul Rashid Mohamed Shariff, author, Shattri Mansor, author, Ahmad Rodzi Mahmud, author, Daut Daman, author, International Conference on Computational Science and its Applications (2007 : Kuala Lumpur)