Nair, Unnikrishnan N., Sankaran G. Paduthol, and Nidhi P. Ramesh. “Multivariate Variance Residual Life in Discrete Time”. Statistica 77, no. 3 (January 1, 2017): 181–205. Accessed April 26, 2024. https://rivista-statistica.unibo.it/article/view/6856.