Farhat Fatima, Syed Atta Ullah Shah, Sangeen Ameer, Shazmeen Alim, Sadia Malik, and Sadia Khaliq, “Effect of Working Length Determination Using X-Ray and Apex Locator on Postoperative Pain”, JHRR, vol. 4, no. 1, pp. 1–5, Feb. 2024.