Holla, Mahabaleshwara, and Samir Bhattacharya. “A Note on a Normal Distribution With Varying Standard Deviation”. Defence Science Journal 15, no. 1 (May 15, 2014): 10-12. Accessed March 29, 2024. https://publications.drdo.gov.in/ojs/index.php/dsj/article/view/7205.