Lednický, Martin, and Andrej Dávid. “THE PREPARATION AND EDUCATION OF CREW MEMBERS FOR INLAND WATER TRANSPORT”. Perner’s Contacts 5, no. 4 (December 30, 2010): 111–120. Accessed July 22, 2024. https://pernerscontacts.upce.cz/index.php/perner/article/view/1050.