@inbook{LeBras1978,
author = {LeBras, H. and Wachter, K.W.},
title= {Living forbears in stable populations},
year = {1978},
editor = {Wachter, K.W.},
editor = {Hammel, E.A.},
editor = {Laslett, P.},
booktitle = {Statistical studies of historical social structure},
address = {New York},
publisher = {Academic Press},
pages = {163--88},
}