Ahlgren, S. A., and B. Knutsson. “Modified Shelf Operation With Lowering of the Entire Roof of the Acetabulum for Congenital Dislocation of the Hip Review of a Surgical Series”. Acta Orthopaedica 29, no. 1-4 (January 1, 1959): 16–20. Accessed June 20, 2026. https://actaorthop.org/actao/article/view/30557.