Jerzyło, P., and A. Wawrzyńska. “The Concept of Supporting System for Inland Waterway Navigation - Case Study for the Lower Section of the Vistula River”. Scientific Journal of Gdynia Maritime University, no. 102, Feb. 2017, pp. 21-32, https://ojs.umg.edu.pl/index.php/sjgmu/article/view/157.