Day, A. M. (1994) ACM Siggraph 94 - Event Report - Orlando, Florida, USA, July 24-29, 1994. Computer Graphics Forum, 13 (5). pp. 360-361. ISSN 1467-8659
Day, AM and Simkiakakis, G (1994) An Adaptive Five Dimensional Ray Classification Scheme for Ray Tracing. Computer Graphics Forum, 13 (2). pp. 121-132. ISSN 1467-8659