Šulko, P. ., P. . Blaho, E. Brumerčíková, and B. . Buková. “COMPARISON OF PAYMENTS FOR ACCESS TO AND USE OF RAILWAY INFRASTRUCTURE AND SELECTED SERVICE FACILITIES AT ŽSR FROM 01.01.2019”. Perner’s Contacts, vol. 13, no. 3, Nov. 2018, pp. 99-108, https://pernerscontacts.upce.cz/index.php/perner/article/view/566.