@article{Manton1981,
author = {Manton, K.G. and Stallard, E. and Vaupel, J.W.},
title= {Methods For Comparing The Mortality Experience of Heterogeneous Populations},
year = {1981},
doi = {10.2307/2061005},
journal = {Demography},
volume = {18},
number = {3},
pages = {389--410},
}