Kucharik, D. (2008) „COOPERATION BETWEEN SLOVAKIA AND NEIGHBOURING COUNTRIES WITHIN ELECTRONIC FEE COLLECTION", Perner’s Contacts, 3(1), s. 1–5. Dostupné z: https://pernerscontacts.upce.cz/index.php/perner/article/view/1205 (Viděno: 22 listopad 2024).