Zyda, Michael J ; Wilson, Kalin P ; Pratt, David R.. Zyda, Michael J., Wilson, Kalin P., Pratt, David R., Monahan, James G. and Falby, John S. "NPSOFF: An Object Description Language for Supporting Virtual World Construction,"Computers & Graphics, Vol. 17, No. 4, pp 457-464..
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1994
Zyda, Michael J ; Pratt, David R ; Osborne, William D. Zyda, Michael J., Pratt, David R., Osborne, William D., and Monahan, James G. "NPSNET: Real-Time Collision Detection and Response," The Journal of Visualization and Computer Animation, special issue on Simulation and Motion Control, Vol. 4, No. 1, January - March 1993, pp.13-24..
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1993
Zyda, Michael J ; Pratt, David R ; Monahan, James G. Zyda, Michael J., Pratt, David R., Monahan, James G. and Wilson, Kalin P. "NPSNET: Constructing a 3D Virtual World," in Computer Graphics, Special Issue on the 1992 Symposium on Interactive 3D Graphics, MIT Media Laboratory, 29 March - 1 April 1992, pp. 147-156..
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1992
Zyda, Michael J ; Monahan, James G ; Pratt, David R Zyda, Michael J., Monahan, James G. and Pratt, David R. "NPSNET: Physically-Based Modeling Enhancements to an Object File Format," chapter in Creating and Animating the Virtual World, Editors: Nadia Magnenat Thalmann and Daniel Thalmann, Publisher: Springer-Verlag Tokyo, 1992, pp. 35-52..
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1992