Garbiec, R., 2017. Construction of a Sustainable Social Security System in Poland in Managerial Trends in the Development of Enterprises in Globalization Era. Slovak University of Agriculture in Nitra, Nitra, 572.
Garbiec, R., 2013. Financial Effectiveness of Public Social Security System in Poland after the Reform of 1999. Editorial House of the Czestochowa University of Technology, Czestochowa.
Garbiec, R., 2018. Financing and Assessment of Pension benefits in the Public Social Security System in Poland. Conference BUSINESS COST MANAGEMENT. HISTORY AND PRESENCE, Czestochowa.