@article{Manton00,
author = {Manton, K.G. and Stallard, E. and Vaupel, J.W.},
title= {Alternative models for the heterogeneity of mortality risks among the aged},
doi = {10.1080/01621459.1986.10478316},
volume = {81},
number = {395},
pages = {635--644},
}