@article{Manton1996,
author = {Manton, K.G. and Stallard, E.},
title= {Longevity in the United States: Age and sex-specific evidence on life span limits from mortality patterns 1960-1990},
year = {1996},
journal = {Journal of Gerontology: Biological Sciences},
volume = {51A},
number = {5},
pages = {B362--375},
}