Szoltysek, Mikolaj Department 'Resilience and Transformation in Eurasia', MPI for Social Anthropology, Max Planck Society;
http://www.demogr.mpg.de/de/projekte_publikationen/publikationen_1904/mpidr_working_papers/a_golden_age_before_serfdom_the_human_capital_of_central_eastern_and_eastern_europe_in_the_17th_5294.htm (Any fulltext)
Baten, J., & Szoltysek, M. (2014). A golden age before serfdom?: the human capital of Central-Eastern and Eastern Europe in the 17th - 19th centuries. MPIDR Working Papers, 8.