Sven Forstmann Jun Ohya Artus Krohn-Grimberghe Ryan McDougall Deformation styles for spline-based skeletal animation. 141-150 2007 conf/sca/2007 Symposium on Computer Animation http://doi.acm.org/10.1145/1272690.1272710 db/conf/sca/sca2007.html#ForstmannOKM07