NACHEMSON, Alf. The Possible Importance of the Psoas Muscle for Stabilization of the Lumbar Spine. Acta Orthopaedica, [S. l.], v. 39, n. 1-3, p. 47–57, 1968. DOI: 10.3109/17453676808989438. Disponível em: https://actaorthop.org/actao/article/view/30072. Acesso em: 18 may. 2026.