HIRSCH, Carl; LEWIN, Thord. Lumbosacral Synovial Joints in Flexion-Extension. Acta Orthopaedica, [S. l.], v. 39, n. 1-3, p. 303–311, 1968. DOI: 10.3109/17453676808989463. Disponível em: https://actaorthop.org/actao/article/view/30109. Acesso em: 17 may. 2026.