1. Department of Operations Research and Actuarial Sciences, Corvinus University of Budapest, Budapest, Hungary
2. Research Laboratory on Engineering & Management Intelligence, Institute for Computer Science and Control (SZTAKI), Eötvös Loránd Research Network (ELKH), Budapest, Hungary
3. Department of Transport Technology and Economics, Faculty of Transportation Engineering and Vehicle Engineering, Budapest University of Technology and Economics, Budapest, Hungary
4. Institute of Mathematics and Informatics, University of Nyíregyháza, Nyíregyháza, Hungary