1. Department of Cognitive Science and Artificial Intelligence, Tilburg Univeristy, Tilburg, The Netherlands
2. Department of Mathematics, Informatics and Statistics, Union University “Nikola Tesla”, Nis, Serbia
3. Department of Mathematics and Informatics, University of Novi Sad, Novi Sad, Serbia
4. Department of Preventive Medicine, University of Kragujevac, Kragujevac, Serbia