1. Feature article - dPVS: an occlusion culling system for massive dynamic environments
2. Airey, John M., Increasing Update Rates in the Building Walkthrough System with Automatic Model-Space Subdivision and Potentially Visible Set Calculations, Ph.D. Thesis, Technical Report TR90-027, Department of Computer Science, University of North Carolina at Chapel Hill, July 1990. Cited on p. 667