[1. Abdih, Y., & Medina, L., (2016), The informal economy in the Caucasus and Central Asia: Size and determinants, In Arnis Sauka, Friedrich Schneider and Colin C. Williams (Editors), Entrepreneurship and the Shadow Economy, Edward Elgar Publishing Inc.10.4337/9781784719883.00016]Search in Google Scholar
[2. Anwar, S., Akbar, R., Akbar, M.W. & Azhar, A., (2017), Measuring the size of underground Economy in Pakistan: A microeconomic approach, Journal of Applied Environmental and Biological Sciences, 7(8), pp. 84-93.]Search in Google Scholar
[3. Aruoba, S.B., (2010), Informal Sector, Government Policy and Institutions, 2010 Meeting Papers, 324, Society for Economic Dynamics.]Search in Google Scholar
[4. Awasthi, R. & Engelschalk, M., (2018), Taxation and the shadow economy. How the tax system can stimulate and enforce the formalization of business activities, Policy Research Working Paper 8391, World Bank Group Governance Global Practice.10.1596/1813-9450-8391]Search in Google Scholar
[5. Barbara, A. & Claudio, C., (2015), Tax reforms and the underground economy: a simulation-based analysis, Dipartimento di Economia, Diritto e Istituzioni, Universita degli Studi di Roma Tor Vergata, Via Columbia 2, 00133 Rome, Italy.]Search in Google Scholar
[6. Bird, R., Martinez-Vasquez, J., & Torgler, B., (2008), Tax effort in developing countries and high income countries: The impact of corruption, Voice Accountability, Economic Analysis and Policy.10.1016/S0313-5926(08)50006-3]Search in Google Scholar
[7. Bologna, J., (2015), The effect of informal employment and corruption on income levels in Brazil, Journal of Comparative Economics, Elsevier, 44(3), pp. 657-695.10.1016/j.jce.2015.12.001]Search in Google Scholar
[8. Borlea, S.N., Achim, M.V. & Miron, M.G.A., (2017), Corruption, shadow economy and economic growth: an empirical survey across the European Union countries, Studia Universitatis “Vasile Goldis” Arad, Economic Series, 27(2), pp. 19-32.10.1515/sues-2017-0006]Search in Google Scholar
[9. Chen, H. & Schneider, F., (2018), Size and causes of shadow economy in China over 1978-2016: based on the currency demand method, Retrieved on 06.04.2019 from: www.econ.jku.at/t3/.../schneider/.../Chen_Schneider_2018_Sizeandcausesofshadow.p]Search in Google Scholar
[10. Feige, E.L. & Urban, I., (2008), Measuring Underground (Unobserved, Non-Observed, Unrecorded) Economies in Transition Countries: Can We Trust GDP? Michigan: The William Davidson Institute.10.2139/ssrn.1147794]Search in Google Scholar
[11. Gaspareniene, L., Remeikiene, R. & Heikkila, M., (2016), Evaluation of the impact of shadow economy determinants: Ukrainian case, Intellectual Economics, 10(2016), pp. 108-113.10.1016/j.intele.2017.03.003]Search in Google Scholar
[12. Guillermo, R.B.C. & Deyvi, A.A., (2018), The informal economy and its impact on tax revenues and economic growth, Analysis of OECD members and Latin America Countries (1995-2016). Retrieved on 20.03.2019 from: https://www.researchgate.net/publication/328343445.]Search in Google Scholar
[13. Hassan, M., (2017), The impact of the shadow economy on aid and economic development nexus in Egypt, Munich Personal RePEc Archive, Available online at: https://mpra.ub.uni-muenchen.de/80990/.]Search in Google Scholar
[14. Hunady, J. & Orviska, M., (2015), The effect of corruption on tax revenue in OECD and Latin America countries, Retrieved on 22.03.2019 from: https://www.researchgate.net/publication/279188559]Search in Google Scholar
[15. International Monetary Fund, (2017), Nigeria’s informal economy accounts for 65% of GDP – IMF, Retrieved on 20.03.2019 from: https://www.businessamlive.com/nigerias-informal-economy-accounts-65-gdpimf/]Search in Google Scholar
[16. Ivanyna, M., Moumouras, A. & Rangazas, P. C. (2016), The culture of corruption, tax evasion, and economic growth (January 2016), Economic Inquiry, 54(1), pp. 520-542.10.1111/ecin.12228]Search in Google Scholar
[17. Mawejje, J. & Munyambonera, E.F., (2016), Tax revenue effects of sectoral growth and public expenditure in Uganda, Economic Policy Research Centre, Research Series, No. 125.10.1111/saje.12127]Search in Google Scholar
[18. Muchiri, K.B., (2014), An analysis of the effect of the growth of the informal sector on tax revenue performance in Kenya, Msc. Thesis submitted to the school of Economics, University of Nairobi.]Search in Google Scholar
[19. Nchor, D. & Konderla, T., (2016), The Shadow Economy of Czech Republic and Tax Evasion: The Currency Demand Approach, Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 64(6), 2081–2086.10.11118/actaun201664062081]Search in Google Scholar
[20. Ogunc, F. & Yilmaz, G., (2000), Estimating the Underground Economy in Turkey, The Central Bank of the Republic of Turkey, Research Department, Discussion paper, September, 2000.]Search in Google Scholar
[21. Opret, L.A., Turcaş, F.M., Dumiter, F.C. & Brezeanu, P., (2017), Tax evasion between fraud and Legality, Studia Universitatis “Vasile Goldis” Arad, Economic Series, 27(4), pp. 1-11.10.1515/sues-2017-0013]Search in Google Scholar
[22. Peter, L., (2017), Investigating the impact of the shadow economy on tax revenue performance in Zimbabwe (1980-2015), Bsc. Project submitted to Department of Economics, Faculty of Commerce, Midlands State University, Gweru, Zimbabwe.]Search in Google Scholar
[23. Petrescu, I.M., (2016), The Effects of Economic Sanctions on the Informal Economy, Management Dynamics in the Knowledge Economy, 4(4), pp. 623-648.]Search in Google Scholar
[24. Putnins, T.J. & Sauka, A., (2014), Measuring the Shadow Economy Using Company Managers, Journal of Comparative Economics, Forthcoming, Available at SSRN https://ssrn.com/abstract=2423253.]Search in Google Scholar
[25. Schneider, F., (2010), The influence of public institutions on the shadow economy: An empirical investigation for OECD Countries, European Journal of Law and Economics, 6(3), pp. 441-468.10.2202/1555-5879.1542]Search in Google Scholar
[26. Schneider, F., & Enste, D., (2000), Shadow economies: size, causes and consequences, The Journal of Economic Literature, 38(1), pp. 77-114.10.1257/jel.38.1.77]Search in Google Scholar
[27. Shahab, M.R., Pajooyan, J. & Ghaffari, F, (2015), The effect of corruption on shadow economy: an empirical analysis based on panel data, International Journal of Business and Development Studies, 7(1), pp. 85-100.]Search in Google Scholar
[28. Tanzi, V., (1980), The underground economy in the United States: estimates and implications, Banca Nazionale del Lavoro, 135, pp. 427–453.]Search in Google Scholar
[29. Tanzi, V., (1983), The underground economy in the United States: annual estimates, 1930–1980, IMF Staff Papers, 30, pp. 283–305.10.2307/3867001]Search in Google Scholar
[30. Tanzi, V., (1999), Uses and Abuses of Estimates of the Underground Economy, Economic Journal, 109(3), pp. 338–347.10.1111/1468-0297.00437]Search in Google Scholar
[31. Tatariyanto, F., (2014), Taxing the underground economy: The case of Indonesia, Journal of Economics and Sustainable Development, 5(27), pp. 236-250.]Search in Google Scholar
[32. Tedika, O. & Mutascu, M., (2013), Shadow economy and tax revenue in Africa. Munich Personal RePEc Archive, Available on line at: http://mpra.ub.unimuenchen.de/508121.]Search in Google Scholar
[33. Vuletin, G.J., (2008), Measuring the informal economy in Latin America and the Caribbean, International Monetary Fund, Working Paper No. 08/102.10.5089/9781451869637.001]Search in Google Scholar
