Dr. Vivek Rana, Dr. Nikhil Srivastava, Dr. Noopur Kaushik, and Dr. Tushar Pruthi, “Puzzling Pain Of Retained Gutta- Percha (GP) :A Unique Case Report”, J. Adv. Zool., vol. 44, no. S5, pp. 3232–3237, Dec. 2023.