Fariha Irfan, Syed Abrar Ali, Hina Khan, Abdur Rehman, Hira Akhtar, and Muhammad Zohaib Younus. “PREVALENCE OF C-SHAPED ROOT CANALS AND ITS TYPES IN MANDIBULAR SECOND MOLARS IN KARACHI PAKISTAN: AN IN-VITRO STUDY”. Pakistan Oral & Dental Journal, Vol. 42, no. 4, Jan. 2023, pp. 184-8, https://podj.com.pk/index.php/podj/article/view/709.