Javořík, T. ., L. Týfa, V. Novotný, and M. Vaněk. “ECONOMIC BALANCE OF REGIONAL RAILWAY LINES IN THE CZECH REPUBLIC”. Perner’s Contacts, vol. 8, no. 3, Nov. 2013, pp. 55-68, https://pernerscontacts.upce.cz/index.php/perner/article/view/745.