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2. Sarcomatous tumors resembling in some respects keloids;Taylor;Arch Dermatol,1890
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4. Dermatofibrosarcoma protuberans: a study of 115 cases;Taylor;Cancer,1962
5. Dermatofibrosarcoma protuberans: a clinico-pathological study of nineteen cases and review of world literature;Bendix-Hansen;Scand J Plast Reconstr Surg Hand Surg,1983