Aqil, Nasrallah, and Abdul Razeq Rahmani. “Residue and Its Application in Real Integrals”. Farah Research and Scientific Journal 1, no. 2 (September 11, 2025): 61–80. Accessed April 6, 2026. https://frsj.farau.edu.af/index.php/frsj/article/view/34.