Authors
Alexander Csanády
University of Prešov, Faculty of Humanities and Natural Sciences, Department of Biology, Prešov, Slovakia
Jozef Oboňa
University of Prešov, Faculty of Humanities and Natural Sciences, Department of Ecology, Prešov, Slovakia
Silvia Duranková
University of Prešov, Faculty of Humanities and Natural Sciences, Department of Biology, Prešov, Slovakia