@book{Vikat2005,
author = {Vikat, A. and Beets, G. and Billari, F.C. and Bühler, C. and Désesquelles, A. and Fokkema, T. and MacDonald, A.L. and Neyer, G.R. and Pailhé, A. and Pinnelli, A. and Solaz, A. and Spéder, Z. },
title= {Wave 1 Questionnaire Manual},
year = {2005},
URL = {http://www.ggp-i.org/images/stories/Survey_Instruments/GGP_QuestW1Manual.pdf
%[2016-01-26},
address = {New York and Geneva},
publisher = {UNECE},
}