Professor Nancy Phaswana-Mafuya (Human Science Research Council (HSRC)); Professor Karl F. Peltzer (Human Science Research Council (HSRC)), 'Study on Global Ageing and Adult Health 2007-2008: Wave 1 (South Africa)', 2011
Development Research Group, Finance and Private Sector Development Unit (World Bank), 'Global Financial Inclusion (Global Findex) Database 2011 (Spain)', 2015
Suresh de Mel (University of Peradeniya, Sri Lanka); David McKenzie (World Bank); Christopher Woodruff (University of Warwick, United Kingdom), 'Microenterprise Survey 2005-2010 (Sri Lanka)', 2012
Development Research Group, Finance and Private Sector Development Unit (World Bank), 'Global Financial Inclusion (Global Findex) Database 2014 (United Kingdom)', 2015
Development Research Group, Finance and Private Sector Development Unit (World Bank), 'Global Financial Inclusion (Global Findex) Database 2014 (Montenegro)', 2015
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 2021 (Poland)', 2022
Development Research Group, Finance and Private Sector Development Unit (World Bank), 'Global Financial Inclusion (Global Findex) Database 2011 (Serbia)', 2015