Ramamourthy, B., Arora, K., Thirunavukkarasu, B., Ramavat, A. S. and Bal, A. (2020) “Recurrent dermatofibrosarcoma protuberans of head and neck with fibrosarcomatous change: a challenge for the head and neck surgeon”, International Journal of Otorhinolaryngology and Head and Neck Surgery, 6(8), pp. 1563–1567. doi: 10.18203/issn.2454-5929.ijohns20203218.