1. Department of Public, Nonprofit & Health Management, Alpen-Adria Universitaet Klagenfurt, Klagenfurt, Austria
2. Public and Non-Profit Management, Faculty of Economics and Behavioural Sciences, Albert-Ludwigs-Universitaet Freiburg, Freiburg im Breisgau, Germany
3. Department of Management, Economics and Quantitative Methods, Università degli studi di Bergamo, Bergamo, Italy
4. Newcastle University London, London, UK