@inbook{Cleland1992,
author = {Cleland, J. and Robinson, W.},
title= {The use of payments and benefits to influence reproductive behaviour},
year = {1992},
editor = {Philips, J.F.},
editor = {Ross, J.A.},
booktitle = {Family Planning Programmes and Fertility},
address = {Oxford},
publisher = {Clarendon Press},
pages = {159--177},
}