3 Titel

• Cohort size effects on wages, working status, and work time Okoampah, Sarah Elektronische Ressource, Bochum : Ruhr-Universität Bochum (RUB), Department of Economics, 2016

• Estimating earnings assimilation of immigrants to Germany - evidence from a double cohort model Okoampah, Sarah Elektronische Ressource, Bochum : Ruhr-Universität Bochum (RUB), Department of Economics, 2016

• Inequality of opportunity in retirement age the role of physical job demands Giesecke, Matthias ; Okoampah, Sarah Bochum : RWI, 2014