Bhattacharyya, M. N., V.V.N. Rao, and K. S. Kapoor. “On Estimating the Parameters of Truncated Trivariate Normal Distributions”. Defence Science Journal 19, no. 3 (May 23, 2014): 157–166. Accessed July 6, 2025. https://publications.drdo.gov.in/ojs/index.php/dsj/article/view/7485.