Konečný, Vladimír, František Petro, a Robert Berežný. 2016. „CALCULATION OF EMISSIONS FROM TRANSPORT SERVICES AND THEIR USE FOR THE INTERNALISATION OF EXTERNAL COSTS IN ROAD TRANSPORT". Perner’s Contacts 11 (4):68-82. https://pernerscontacts.upce.cz/index.php/perner/article/view/572.