Spulbar, C., Ehsanifar, M., Birau, R., Babaie, A., & Doagă, D. I. (2021). Advanced empirical research based on structural equation modeling (SEM) regarding the impact of tax revenue on GDP dynamics at EU-28 level. Scientific Annals of Economics and Business, 68(3), 285–307. https://doi.org/10.47743/saeb-2021-0017