@inbook{Keilman2006,
author = {Keilman, N.},
title= {Demographic translation: From period to cohort perspective and back},
year = {2006},
editor = {Wunsch, G.},
editor = {Caselli, G.},
editor = {Vallin, J.},
booktitle = {Demography: Analysis and Synthesis},
address = {Burlington, San Diego, and London},
publisher = {Elsevier},
pages = {215--225},
}