Diawara, Norou, S.H. Sathish Indika, Melva Grant, and Edgard M. Maboudou-Tchao. 2014. “The Bivariate Erlang and Its Application in Modeling Recurrence Times of Kidney Dialysis Data”. International Journal of Statistics in Medical Research 3 (2):88-93. https://doi.org/10.6000/1929-6029.2014.03.02.2.