GUY, A.; GROZA, V.; TIKHONOVA, V.; LESCHINSKIY, O. Clear and fuzzy fractal models of spreading dangerous environmental phenomena. Proceedings of National Aviation University (archive), [S. l.], v. 30, n. 4, p. 182–185, 2006. DOI: 10.18372/2306-1472.30.1397. Disponível em: https://jrnl.nau.edu.ua/index.php/visnik/article/view/1397. Acesso em: 4 feb. 2026.