Authors
Viera Petlušová
Department of Ecology and Environmental Sciences, Faculty of Natural Sciences, Constantine the Philosopher University, Nitra
Peter Petluš
Department of Ecology and Environmental Sciences, Faculty of Natural Sciences, Constantine the Philosopher University, Nitra
Martin Zemko
Department of Ecology and Environmental Sciences, Faculty of Natural Sciences, Constantine the Philosopher University, Nitra
Ľubomír Rybanský
Department of Mathematics, Faculty of Natural Sciences, Constantine the Philosopher University, Nitra