WÓJCIK, Gustaw. Epidemiology and classification of lumbosacral spondylolisthesis. Journal of Education, Health and Sport, [S. l.], v. 7, n. 7, p. 572–579, 2017. Disponível em: https://apcz.umk.pl/JEHS/article/view/4659. Acesso em: 14 feb. 2026.