1.
Munda M, Rotolo F, Legrand C. parfm: Parametric Frailty Models in R. J. Stat. Soft. [Internet]. 2012 Nov. 13 [cited 2024 Nov. 21];51(11):1-20. Available from: https://www.jstatsoft.org/index.php/jss/article/view/v051i11