@article{Gavrilov2011,
author = {Gavrilov, L.A. and Gavrilova, N.S.},
title= {Mortality measurement at advanced ages:  A study of the social security administration death master file},
year = {2011},
doi = {10.1080/10920277.2011.10597629},
volume = {15},
number = {3},
pages = {432‒447},
}