BUSZKO, Andrzej; FIRKOWSKA, Anna. Tax optimization management in the context of shadow economy performance. Scientific Journal of Bielsko-Biala School of Finance and Law, Bielsko-Biała, PL, v. 29, n. 1, 2025. DOI: 10.19192/wsfip.sj1.2025.11. Disponível em: https://www.asej.eu/index.php/asej/article/view/840. Acesso em: 3 oct. 2025.