https://en.wikipedia.org/wiki/Octant_projection
https://en.wikipedia.org/wiki/Leonardo%27s_world_map
https://scholar.google.com/citations?hl=en&user=w1a2LacAAAAJ
http://en.wikipedia.org/wiki/Christopher_Tyler
http://en.wikipedia.org/wiki/Autostereogram
http://en.wikipedia.org/wiki/Random_dot_stereogram
http://en.wikipedia.org/wiki/Magic_Eye
http://www.scholarpedia.org/article/Autostereogram
http://mathworld.wolfram.com/Stereogram.html
http://www.easystereogrambuilder.com
http://www.facebook.com/pages/SIRDS/115326531817780
http://encyclopedia2.thefreedictionary.com/Single+Image+Random+Dot+Stereogram