Johansson, Sven. “After-Examination of Collum Fractures of the Femur Operated on by Extra-Articular Osteosynthesis”. Acta Orthopaedica 5, no. 1-4 (January 1, 1934): 119–128. Accessed May 31, 2026. https://actaorthop.org/actao/article/view/31347.