A Framework for User Tests in a Virtual Environment. - Volker Wittstock; Mario Lorenz 001; Eckhart Wittstock; Franziska Pürzel (ISVC (2), 2012)

Real NC Control Unit and Virtual Machine to Improve Operator Training. - Franziska Pürzel; Philipp Klimant; Volker Wittstock; Michael Kuhl (VARE, 2013)