1. Otto von Guericke University Institute of Process Engineering Universitätsplatz 2 39106 Magdeburg Germany
2. Max Planck Institute for Dynamics of Complex Technical Systems Sandtorstraße 1 39106 Magdeburg Germany
3. Universidad Autónoma de Zacatecas Jardin Juarez 147 98000 Zacatecas Mexico
4. Anhalt University of Applied Sciences Bernburger Straße 55 06366 Köthen Germany