Strömqvist, Björn, and Lars Ingvar Hansson. “Avascular Necrosis Associated With Nailing of Femoral Neck Fracture: Two Cases Examined Pre- and Postoperatively by Tetracycline and Radionuclide Tracer Techniques”. Acta Orthopaedica, vol. 54, no. 5, Apr. 1983, pp. 687-94, doi:10.3109/17453678308996612.