@article{Manton1986,
author = {Manton, K.G. and Stallard, E. and Vaupel, J.W.},
title= {Alternative Models for the Heterogeneity of Mortality Risks among the Aged},
year = {1986},
doi = {10.1080/01621459.1986.10478316},
journal = {Journal of the American Statistical Association},
volume = {81},
number = {395},
pages = {635--644},
}