@article{Riggs1990,
author = {Riggs, J.E.},
title= {Longitudinal Gompertzian analysis of adult mortality in the U.S., 1900-1986},
year = {1990},
doi = {10.1016/0047-6374(90)90053-I},
journal = {Mechanisms of Ageing and Development},
volume = {54},
number = {3},
pages = {235--247},
}