@article{Yashin1995,
author = {Yashin, A.I. and Vaupel, J.W. and Iachine, I.A.},
title= {Correlated individual frailty: An advantageous approach to survival analysis of bivariate data},
year = {1995},
doi = {10.1080/08898489509525394},
journal = {Mathematical Population Studies},
volume = {5},
number = {2},
pages = {145--159},
}