SZYMAŃSKI, Jarosław. The Impact of the COVID-19 Pandemic on Changes in Competitiveness in the Public Procurement System. Journal of Finance and Financial Law, [S. l.], v. 4, n. 32, p. 189–201, 2021. DOI: 10.18778/2391-6478.4.32.12. Disponível em: https://www.czasopisma.uni.lodz.pl/fipf/article/view/11468. Acesso em: 6 dec. 2025.