Lama, Poonam, Gautam Jha, and Indra Prasad Amatya. “Primary Ovarian Pregnancy After Bilateral Tubal Sterilization”. Journal of Nepal Health Research Council 21, no. 1 (September 10, 2023): 181-183. Accessed December 12, 2025. http://103.69.126.137/index.php/jnhrc/article/view/3913.