1. Faculty of Human and Business Sciences, Chair of Technology and Innovation Management, Saarland University, Building C3 1, Room 326, P.O. 15 11 50, 66041 Saarbruecken, Germany
2. Faculty of Human and Business Sciences, Chair of Technology and Innovation Management, Saarland University, Building C3 1, Room 322, P.O. 15 11 50, 66041 Saarbruecken, Germany