@techreport{Hogerbrugge2014,
author = {Hogerbrugge, M.J.A. and de Hoon, S. and Dykstra, P.A. and Komter, A.E. and Liefbroer, A.C. and Mulder, C.H.},
title= {Codebook of the Netherlands Kinship Panel Study, a multi-actor, multi-method panel study on solidarity in family relationships, Wave 4},
year = {2014},
publisher = {Netherlands Interdisciplinary Demographic Institute},
address = {The Hague},
institution = {NKPS Working Paper 13},
}