H. Schmitz, T.L. Nguyen, Education as a Moderator of Genetic Mortality Risk, 2026.

H. Schmitz, M. Westphal, Early- and Later-Life Stimulation: How Retirement Shapes The Effect of Education on Old-Age Cognitive Abilities, 2025.

H. Schmitz, B.B. Tawiah, Life-Cycle Health Effects of Compulsory Schooling, RWI - Leibniz-Institut für Wirtschaftsforschung, Ruhr-University Bochum, TU Dortmund University, University of Duisburg-Essen, 2023.

D. Freise, V. Schiele, H. Schmitz, Housing Situations and Local COVID-19 Infection Dynamics – A Case Study With Small-Area Data, Elsevier BV, 2023.

D. Monsees, H. Schmitz, The Effect of Compulsory Schooling on Vaccination against COVID and Influenza, RWI - Leibniz-Institut für Wirtschaftsforschung, Ruhr-University Bochum, TU Dortmund University, University of Duisburg-Essen, 2023.

V. Schiele, Labor Market Spillover Effects of a Compulsory Schooling Reform in Germany, 2022.

V. Schiele, H. Schmitz, Understanding Cognitive Decline in Older Ages: The Role of Health Shocks, RWI - Leibniz-Institut für Wirtschaftsforschung, Ruhr-University Bochum, TU Dortmund University, University of Duisburg-Essen, 2021.

H. Schmitz, M. Westphal, The Dynamic and Heterogeneous Effects of Retirement on Cognitive Decline, RWI - Leibniz-Institut für Wirtschaftsforschung, Ruhr-University Bochum, TU Dortmund University, University of Duisburg-Essen, 2021.

T. Mayrhofer, H. Schmitz, Prudence and Prevention: Empirical Evidence, RWI - Leibniz-Institut für Wirtschaftsforschung, Ruhr-University Bochum, TU Dortmund University, University of Duisburg-Essen, 2020.

C. Bünnings, V. Schiele, Spring Forward, Don’t Fall Back: The Effect of Daylight Saving Time on Road Safety, RWI - Leibniz-Institut für Wirtschaftsforschung, Ruhr-University Bochum, TU Dortmund University, University of Duisburg-Essen, 2018.