The developed (graded) longitudinal profile simulation in the river section (a case study of the Upper Oka River). Geography and Tourism, [S. l.], v. 2, n. 5, p. 75–81, 2017. Disponível em: https://czasopisma.ukw.edu.pl/index.php/gat/article/view/77.. Acesso em: 3 apr. 2025.