Abd Hassan, Noor, and Muhannad F. Al-Saadony. “Estimation Tail Parameter for Geometric Brownian Motion”. Al-Qadisiyah Journal of Pure Science 26, no. 5 (September 14, 2021): math 1-15. Accessed May 3, 2024. https://journalsc.qu.edu.iq/index.php/JOPS/article/view/1440.