@article{Olshansky1990,
author = {Olshansky, S.J. and Carnes, B.A. and Cassel, C.},
title= {In search of Methuselah: Estimating the upper limits to human longevity},
year = {1990},
doi = {10.1126/science.2237414},
journal = {Science},
volume = {250},
number = {4981},
pages = {634--640},
}