UNGERT, A. Sea Influence on Safe Realisation of Passage Plan in Navigationally Difficult Area. Scientific Journal of Gdynia Maritime University, [S. l.], n. 102, p. 111–123, 2017. Disponível em: https://ojs.umg.edu.pl/index.php/sjgmu/article/view/164. Acesso em: 16 sep. 2024.