WÓJCIK, Gustaw. Epidemiology and classification of lumbosacral spondylolisthesis – part II. Journal of Education, Health and Sport, [S. l.], v. 7, n. 8, p. 367–377, 2017. Disponível em: https://apcz.umk.pl/JEHS/article/view/4742. Acesso em: 17 dec. 2025.