Ching-Sheng Wang and Yu-Hung Su and Ching-Yang Hong, A 3D Virtual Navigation System Integrating User Positioning and Pre-Download Mechanism. journal = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology. April 2008, vol. 16(4). 1010 - 1014 [viewed 23 September 2024]. Available from: https://publications.waset.org/pdf/9498.