Mehmood, Nadeem, Syed Muhmmad Aqil Burney, Kashif Rizwan, Asadullah Shah, & Adnan Nadeem. " Building Spatio-Temporal Database Model Based on Ontological Approach using Relational Database Environment." Mehran University Research Journal of Engineering and Technology [Online], 36.4 (2017): 10. Web. 28 Mar. 2024