@article{Kohler2002,
author = {Kohler, H.-P. and Ortega, J.A.},
title= {Tempo-adjusted period parity progression measures, fertility, postponement and completed cohort fertility},
year = {2002},
doi = {10.4054/DemRes.2002.6.6},
URL = {http://www.demographic-research.org/Volumes/Vol6/6/6-6.pdf},
journal = {Demographic Research},
volume = {6},
number = {6},
pages = {91--144},
}