Ramamourthy, Balaji, Kanika Arora, Balamurugan Thirunavukkarasu, Anurag S. Ramavat, and Amanjit Bal. 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):1563-67. https://doi.org/10.18203/issn.2454-5929.ijohns20203218.