Berg, N. O., T. Landberg, and M. Lindgren. “Osteonecrosis and Sarcoma Following External Irradiation of Intracerebral Tumors”. Acta Oncologica 4, no. 6 (January 1, 1966): 417–436. Accessed May 24, 2026. https://medicaljournalssweden.se/actaoncologica/article/view/34132.