1. Helwig EB. Atypical fibroxanthoma. Proceedings of the 18thAnnual Tumor Seminar of San Antonio Socaiety of Pathologists, 1961. Tex State J Med 1963;59:664.
2. Weiss SW, Goldblum JR. Malignant fibrohistiocytic tumors. In: Strauss M, ed. Enzinger and Weiss’s Soft Tissue Tumors, 6th edn. St Louis: Mosby, 2014:535-69.
3. Freedberg IM, Eise AZ, Wolff K, et al. Atypical fibroxanthoma. In: Freedberg I, ed. Fitzpatrick’s Dermatology in General Medicine, 6th edn. New York: McGraw Hill Professional, 2003:998.
4. Heenan PJ. Tumors of the fibrous tissue involving the skin.Elder D, Elenitsas R, Jaworsky C, Johnson B eds. In: Lever’s histopathology of the skin. Eight edition. Philadelphia: Lippincott- Raven, 1997: 847-88.
5. Helwig EB, May D. Atypical fibroxanthoma of the skin withmetastasis. Cancer 1986; 57: 368.