Original paper can be found here:<p><a href="http://www.cs.ubc.ca/~van/papers/2013-TOG-MuscleBasedBipeds/index.html" rel="nofollow">http://www.cs.ubc.ca/~van/papers/2013-TOG-MuscleBasedBipeds/...</a><p>Direct to PDF:<p><a href="http://www.cs.ubc.ca/~van/papers/2013-TOG-MuscleBasedBipeds/2013-TOG-MuscleBasedBipeds.pdf" rel="nofollow">http://www.cs.ubc.ca/~van/papers/2013-TOG-MuscleBasedBipeds/...</a>