Carstensen, Claus H.Claus H.Carstensen0000-0002-5736-4695Wetzel, EunikeEunikeWetzel2019-09-192013-11-1120132190-0493https://fis.uni-bamberg.de/handle/uniba/2362engLinking PISA 2000 and PISA 2009: Implications of instrument design on measurement invariancearticlehttp://www.psychologie-aktuell.com/fileadmin/download/ptam/2-2013_20130625/04_Wetzel.pdf