1. Selçuk, A., Güdükbay, U., Özgüç, B.: A survey of interactive realistic walkthrough techniques in complex graphical environments. In: Advances in Computer and Information Sciences, pp. 334–341 (1998)
2. Chhugani, J., Purnomo, B., Krishnan, S., Cohen, J., Venkatasubramanian, S., Johnson, D., Kumar, S.: vlod: High-fidelity walkthrough of large virtual environments. IEEE Transactions on Visualization and Computer Graphics 11(1), 35–47 (2005)
3. Akenine-Möller, T., Haines, E.: Real-Time Rendering. A. K. Peters, Ltd, Natick (2002)
4. Samet, H., Webber, R.E.: Hierarchical data structures and algorithms for computer graphics. i. fundamentals. IEEE Computer Graphics and Application 8, 48–68 (1988)
5. Pajarola, R.: Overview of quadtree-based terrain triangulation and visualization. Technical Report UCI-ICS TR 02-01, Dept. Info. Comp. Sci., University of California, Irvine (2002)