Affiliation: | (1) Department of Mathematics and Computer Science, FNM, University of Maribor, Koroška 160, 2000 Maribor, Slovenia;(2) Institute of Mathematics, Physics and Mechanics, Ljubljana, Slovenia;(3) Department of Futures Studies, University of Kerala, Trivandrum, 695034, India;(4) Department of Mathematics, University of Ljubljana, Jadranska 19, 1000 Ljubljana, Slovenia;(5) University of Maribor, Maribor, Slovenia;(6) Chingamparampil, Vazhapally, Changanacherry, 686103 Kerala, India |