World Bank Group (WBG); European Bank for Reconstruction and Development (EBRD); European Investment Bank (EIB), 'Enterprise Survey 2019 (Montenegro)', 2019
Centraal Bureau voor de Statistiek (CBS) (Statistics Netherlands); Minnesota Population Center (University of Minnesota), 'Veertiende Algemene Volkstelling (28 februari 1971); tevens Beroepstelling en Algemene Woningtelling 1971 - IPUMS Subset (Netherlands)', 2016
The World Bank Group; The European Bank for Reconstruction and Development; The European Investment Bank, 'Enterprise Survey 2009-2019, Panel Data (North Macedonia)', 2020
Development Research Group, Finance and Private Sector Development Unit (World Bank), 'Global Financial Inclusion (Global Findex) Database 2011 (Serbia)', 2015
Central Statistics Office; Minnesota Population Center (University of Minnesota), 'Census of Population of Ireland 1981 - IPUMS Subset (Ireland)', 2016
Development Research Group, Finance and Private Sector Development Unit (World Bank), 'Global Financial Inclusion (Global Findex) Database 2014 (Luxembourg)', 2015
Institute of Public Health of the Republic of Macedonia; United Nations Children’s Fund, 'Multiple Indicator Cluster Survey 2011 - Roma Settlements (Macedonia, FYR)', 2013
Institute of Public Health of the Republic of Macedonia; United Nations Children’s Fund, 'Multiple Indicator Cluster Survey 2011 (Macedonia, FYR)', 2013