@inbook{Cho1973,
author = {Cho, L.J.  and Retherford, R.D.},
title= {Comparative analysis of recent fertility trends in East Asia},
year = {1973},
editor = {International Union for the Scientific Study of Population},
booktitle = {Proceedings of the 17th General Conference of the IUSSP},
address = {Liège, Belgium},
publisher = {IUSSP},
pages = {163--181},
}