ÖSTERMAN, Kalevi. Proceedings of the Finnish Spine Research Society L: Helsinki, Finland, September 7, 1987. Acta Orthopaedica, [S. l.], v. 59, n. 4, p. 479–481, 1988. DOI: 10.3109/17453678809149410. Disponível em: https://actaorthop.org/actao/article/view/22813. Acesso em: 18 may. 2026.