Anwar, Z. ., A. . Nasir Khan, and N. . Gupta. “Expectation Identities of Generalized Order Statistics from the Bass Diffusion Model”. Thailand Statistician, vol. 20, no. 1, Dec. 2021, pp. 16-25, https://ph02.tci-thaijo.org/index.php/thaistat/article/view/245846.