Achim, M.V., Borlea, S.N., Găban, L.V. and Cuceu, I.C. 2018. Rethinking the shadow economy in terms of happiness. Evidence for the European Union Member States. Technological and Economic Development of Economy. 24, 1 (Jan. 2018), 199-228. DOI:https://doi.org/10.3846/20294913.2016.1209250.