Shcherbyna, O. V., and O. L. Drozhzhyn. “Methodical Thesis Linked Slot-Charter Tug-Barge Transportation Rates”. Visnyk of Vinnytsia Politechnical Institute, no. 2 (April 30, 2020): 99–109. Accessed July 16, 2024. https://visnyk.vntu.edu.ua/index.php/visnyk/article/view/2487.