“Emergency contracting to purchase goods and services needed to deal with COVID-19: considerations on article 4 of Law No. 13.979/2020” (2020) Revista do Tribunal Regional Federal da 3ª Região, 31(147), pp. 15–36. Available at: https://revista.trf3.jus.br/index.php/rtrf3/article/view/231 (Accessed: 12 August 2026).