Pulfrich's illusion: (1)European Particle Physics Outreach Group. "Experiment 24. The Pulfrich-effect." PHYSICS FAIR; Provoke your Imagination n.pag. On-Line. Internet. 10 Jan. 2000. Available at... http://outreach.cern.ch/public/NL/physics_fair/Exp24.html (2)Newbold, Mark. "The Pulfrich Illusion." Mark Newbold's Java Stuff. N.pag. On-Line. Internet. 10 Jan. 2000. Available at... http://www.dogfeathers.com/java/pulfrich.html (3)Wenderoth, Peter. "The Pulfrich Effect." psy232 (20 Feb. 1996): n.pag. On-Line. Internet. 10 Jan. 2000. Available at... http://www.psy.mq.edu.au/~peterw/232/perc/week1

Anaglyph images: (4)Studio 3D. "Anaglyph stereo." STUDIO 3D Stereoscopic 3-D n.pag. On-Line. Internet. 24 Jan. 2000. Available at... http://www.studio3d.com/pages/anaglyph.html