Comparison of crank based leg mechanism/weblinks

Serious: Just for fun:
 * http://www.mechanicalspider.com/comparison.html
 * http://www.amandaghassaei.com/files/thesis.pdf
 * Shigley, Joseph E. “The Mechanics of Walking Vehicles: A Feasibility Study.” University of Michigan Department of Mechanical Engineering. 1960.
 * http://davidbuckley.net/RS/WalkerMechanisms/SimpleWalkerMechanisms.htm
 * Walking T-Rex based on a modified Jansen Linkage:
 * https://www.youtube.com/watch?v=mGOled86Sjo
 * https://www.youtube.com/watch?v=xcccj4P727U