Húlan, Tomáš
Trník, Anton
Kaljuvee, Tiit
Uibu, Mai
Štubňa, Igor
Kallavus, Urve
Traksmaa, Rainer
Funding for this research was provided by:
Agentúra Ministerstva školstva, vedy, výskumu a športu SR (VEGA 1/0162/15, VEGA 1/0162/15, VEGA 1/0162/15)
Constantine the Philosopher University in Nitra (VII/1/2015)
Czech Science Foundation (P105/12/G059)
Estonian Ministry of Education and Research (IUT33-19)