Volker Blanz Kristina Scherbaum Thomas Vetter Hans-Peter Seidel Exchanging Faces in Images. 669-676 2004 23 Comput. Graph. Forum 3 http://dx.doi.org/10.1111/j.1467-8659.2004.00799.x db/journals/cgf/cgf23.html#BlanzSVS04