BUSZKO , Andrzej. Shadow Economy impacts on Start-up vitality in selected European countries . Journal of Management and Financial Sciences, [S. l.], n. 58, p. 9–22, 2025. DOI: 10.33119/JMFS.2025.58.1. Disponível em: https://econjournals.sgh.waw.pl/JMFS/article/view/5014. Acesso em: 19 dec. 2025.