@articleFreise_Schmitz_Westphal_2022, title=Late-Career Unemployment and Cognitive Abilities, volume=86, DOI=https://doi.org/10.1016/j.jhealeco.2022.102689, journal=Journal of Health Economics, author=Freise, Diana and Schmitz, Hendrik and Westphal, Matthias, year=2022 

@articleWestphal_Kamhöfer_Schmitz_2022, title=Marginal College Wage Premium under Selection into Employment, volume=132, DOI=10.1093/ej/ueac021, number=646, journal=Economic Journal, author=Westphal, Matthias and Kamhöfer, Daniel A. and Schmitz, Hendrik, year=2022, pages=2231–2272 

@bookSchmitz_Westphal_2021, series= Ruhr Economic Papers, title=The dynamic and heterogeneous effects of retirement on cognitive decline, volume=918, publisher=RWI - Leibniz-Institut für Wirtschaftsforschung, Ruhr-University Bochum, TU Dortmund University, University of Duisburg-Essen, author=Schmitz, Hendrik and Westphal, Matthias, year=2021, collection= Ruhr Economic Papers 

@articleKamhöfer_Schmitz_Westphal_2019, title=Heterogeneity in Marginal Non-Monetary Returns to Higher Education, volume=17, DOI=10.1093/jeea/jvx058, number=1, journal=Journal of the European Economic Association, author=Kamhöfer, Daniel A and Schmitz, Hendrik and Westphal, Matthias, year=2019, pages=205–244 

@articleSchmitz_Westphal_2017, title=Informal Care and Long-term Labor Market Outcomes, volume=56, DOI=10.1016/j.jhealeco.2017.09.002, journal=Journal of Health Economics, author=Schmitz, Hendrik and Westphal, Matthias, year=2017, pages=1–18 

@articleSchmitz_Westphal_2015, title=Short-and medium-term effects of informal care provision on female caregivers’ health, volume=42, DOI=10.1016/j.jhealeco.2015.03.002, journal=Journal of Health Economics, author=Schmitz, Hendrik and Westphal, Matthias, year=2015, pages=174–185