Authors
Pál A. Kupán
Department of Mathematics-Informatics, Faculty of Technical and Human, Sciences, Sapientia Hungarian University of Transylvania
Gyöngyvér Márton
Department of Mathematics-Informatics, Faculty of Technical and Human Sciences, Sapientia Hungarian University of Transylvania
Róbert Szász
Department of Mathematics-Informatics, Faculty of Technical and Human Sciences, Sapientia Hungarian University of Transylvania
