WILPPULA, E.; JUSSILA, P. Spinal Nerve Block: A Diagnostic Test in Sciatica. Acta Orthopaedica, [S. l.], v. 48, n. 5, p. 458–460, 1977. DOI: 10.3109/17453677708989731. Disponível em: https://actaorthop.org/actao/article/view/29274. Acesso em: 26 apr. 2026.