1. Basilar impression and Arnold-Chiari malformation. A study of 66 cases;De Barros, M.C.; Farias, W.; Ataide, L.; Lins, S.;Journal of Neurology, Neurosurgery, and Psychiatry,1968
2. Les Aspects Neurologiques des Malformations Congenitales de la Charniere Cranio-rachidienne;Garcin, R.; Oeconomos, D.,1953