Pfoser S, Jung E, Putz L-M. Same river same rules? – Administrative barriers in the Danube countries. J. sustain. dev. transp. logist. [Internet]. 2018 Dec. 19 [cited 2026 Jul. 16];3(3):27-3. Available from: https://jsdtl.sciview.net/index.php/jsdtl/article/view/60