Korvald, E., and A. J. Sundsfjord. 1974. “Examination of the Vascular’ Disturbance of the Femoral Head Following Intracapsular Fracture of the Hip: A Preliminary Report Using a New Isotope Complex”. Acta Orthopaedica 45 (1-4):572-78. https://doi.org/10.3109/17453677408989180.