Jakaitienė, Audronė, and Danas Zuokas. “The Survival Regression Model of Competing Risks for the Family of Farlie–Gumbel–Morgenstern Distributions”. Lietuvos Matematikos Rinkinys, vol. 42, no. spec., Dec. 2002, pp. 518–522, https://doi.org/10.15388/LMR.2002.32987.