R. R. Aisy, N. Iriawan, S. Andari, M. Rithmala, and Y. Sumartin, “SURVIVAL TIME MODELING IN HEMODIALYSIS PATIENTS USING A WEIBULL MIXTURE PROPORTIONAL HAZARDS MODEL”, BAREKENG: J. Math. & App., vol. 20, no. 4, pp. 2755-2768, Aug. 2026.