@inbook{Kreyenfeld2006,
author = {Kreyenfeld, M.},
title= {Family formation in East and West Germany before and after unification},
year = {2006},
doi = {10.1007/1-4020-4716-9_9},
editor = {Gustaffson, S.},
editor = {Kalwij, A.},
booktitle = {Education and postponement of maternity: Economic analyses for industrialized countries},
address = {Berlin},
publisher = {Springer},
pages = {225--236},
}