Michael Kipp Michael Neff Kerstin H. Kipp Irene Albrecht Towards Natural Gesture Synthesis: Evaluating Gesture Units in a Data-Driven Approach to Gesture Synthesis. 15-28 2007 conf/iva/2007 IVA http://dx.doi.org/10.1007/978-3-540-74997-4_2 db/conf/iva/iva2007.html#KippNKA07