“Proximal ­junctional ­kyphosis­ in ­Lenke ­C5­ curves. ­A ­comparison between­ anterior­ and­ posterior ­surgery”, Rev. Asoc. Arg. Ort. y Traumatol, vol. 79, no. 1, pp. 19–26, Mar. 2014, doi: 10.15417/263.