1. G. Bell, A. Parisi, and M. Pesce, VRML: Version 1.0 specification
http://www.webspace.sgi.com
/Archive/Spec1.0/index.html, 1995.
2. M. Boas, Apparent shape of large objects at relativistic speeds, Amer. J. Phys. 29 (1961), 283.
3. M.-C. Chang, F. Lai, and W.-C. Chen,Image shading taking into account relativistic effects,ACM Trans. Graphics 15 (1996), 265-300.
4. A. Einstein, Zur Elektrodynamik bewegter Körper, Ann. d. Phys. 17 (1905), 891.
5. J. D. Foley, A. Van Dam, S. K. Feiner, and J. F. Hughes, Fundamentals of interactive computer graphics, second ed., Addison-Wesley Publishing Company, 1990.