Institution: | 1.Faculty of Technical Sciences, University of Novi Sad, Trg Dositeja Obradovi?a 6, Novi Sad, 21000, Serbia ;2.Faculty of Educational Sciences, Open University of the Netherlands, Valkenburgerweg 177, 6419 AT, Heerlen, the Netherlands ;3.Faculty of Computer and Information Science, University of Ljubljana, Ve?na pot 113, Ljubljana, 1000, Slovenia ;4.Mathematics Department, Pacific Lutheran University, 1010 122nd St S, Tacoma, WA, 98447, USA ;5.Faculty of Mathematics, University of Belgrade, Studentski trg 16, Belgrade, 11000, Serbia ; |