Alvegård, T.A., H. Bauer, C. Blomqvist, A. Rydholm, and S. Smeland. 2004. “The Scandinavian Sarcoma Group—background, Organization and the SSG Register—the First 25 Years”. Acta Orthopaedica 75 (sup311):1-7. https://doi.org/10.1080/00016470410001708250.