@article{Rindfuss1976,
author = {Rindfuss, R.R. and Bumpass, L.L.},
title= {How old is too old? Age and the sociology of fertility},
year = {1976},
doi = {10.2307/2134315},
journal = {Family Planning Perspectives},
volume = {8},
number = {5},
pages = {226--230},
}