Mathew, S., and M. Chacko. “Estimation of P(X < Y ) for Morgenstern Type Bivariate Exponential Distribution Based on Ranked Set Sample”. Thailand Statistician, vol. 24, no. 1, Dec. 2025, pp. 124-36, https://ph02.tci-thaijo.org/index.php/thaistat/article/view/263019.