Text in book Caldwell, Craig ; Linehan, Thomas E. ; Parent, Richard E. – «Simulation and animation». – SISEA : proceedings. – Edited by Wim Van Der Plas. – Groningen : SISEA, 1991. – P. 38-56.
Video : Art work Caldwell, Craig. – Looking In. – 3/4" U-Matic, col., stereo sound, 26 s.