VIDIGAL, Euler C.; DA SILVA, Odilio L. Observation Hip. Acta Orthopaedica, [S. l.], v. 52, n. 2, p. 191–195, 1981. DOI: 10.3109/17453678108991780. Disponível em: https://actaorthop.org/actao/article/view/28832. Acesso em: 19 may. 2026.