Realistic ray tracing / Peter Shirley, R. Keith Morley. Shirley, P. (Peter), 1963- Morley, R. Keith, 1976- Computer graphics. T385 .S438 2003 006.62 21 SHR Includes bibliographical references (p. 221-222) and index. Natick, Mass. : AK Peters, c2003. c2003. 2003 Text xv, 225 p. : eng