Anna Dolinayová, Igor Dömény, Jan Jansák and Peter Šulko 2021. Single European Railway Area and the Problem of Rail Infrastructure Charges - Case Studies in V4 Countries. Communications - Scientific letters of the University of Zilina. 23, 4 (Oct. 2021), A208-A222. DOI:https://doi.org/10.26552/com.C.2021.4.A208-A222.