Achim MV, Borlea SN, Găban LV, Cuceu IC. Rethinking the shadow economy in terms of happiness. Evidence for the European Union Member States. TEDE [Internet]. 2018Jan.17 [cited 2024Nov.24];24(1):199-228. Available from: https://transport.vgtu.lt/index.php/TEDE/article/view/84