Poprawa, Katarzyna. “Submission and Supplementation of Declarations or Documents by the Contractor in Public Procurement”. Acta Iuridica Resoviensia (formelry: The Scientific Journal of the University of Rzeszow, Law Series) 30, no. 112 (September 15, 2020): 217–231. Accessed June 21, 2025. https://journals.ur.edu.pl/zeszyty-sp/article/view/2222.