@article{van Imhoff2001,
author = {van Imhoff, E.},
title= {On the Impossibility of Inferring Cohort Fertility Measures from Period Fertility Measures},
year = {2001},
doi = {10.4054/DemRes.2001.5.2 },
URL = {http://www.demographic-research.org/volumes/vol5/2/},
journal = {Demographic Research},
volume = {5},
number = {2},
pages = {23--64},
}