@inbook{Lesthaeghe2001,
author = {Lesthaeghe, R.J.  and Vanderhoeft, C.},
title= {Ready, willing, and able : a conceptualization of transitions to new behavioral forms},
year = {2001},
editor = {Casterline, J. },
booktitle = {Diffusion Processes and Fertility Transition: Selected Perspectives},
address = {Washington, D.C.},
publisher = {National Research Council},
pages = {240--264},
}