@inbook{Van de Walle2003,
author = {Van de Walle, E.},
title= {Induced abortion: history},
year = {2003},
editor = {Demeny, P.},
editor = {McNicoll, G.},
booktitle = {Encyclopedia of Population},
address = {New York},
publisher = {MacMillan Reference USA},
pages = {527--529},
}