1. Helwig EB. Atypical fibroxanthoma. Tex State J Med. 1963;59:664-667.
2. Enzinger FM, Weiss SW. Malignant fibrohistiocytic tumors. In: Enzinger FM, Weiss SW. Soft Tissue Tumors. St Louis, MO: Mosby, 1995:351-355.
3. Eckert F, Burg G, Braun-Falco O, et al. Immunostaining in atypical fibroxanthoma of the skin. Pathol Res Pract. 1988;184:27-34.
4. Zelger BG, Steiner H, Kutzner H, et al. Cellular neurothekeoma: an epithelioid variant of dermatofibroma? Histopathology. 1998;32:414-422.
5. Ricci A, Cartun RW, Zakowski MF. Atypical fibroxanthoma: a study of 14 cases emphasizing the presence of Langerhans' histiocytes with implications for differential diagnosis by antibody panels. Am J Surg Pathol. 1988;12:591-598.