<ul><li><a href=https://diariodarepublica.pt/dr/legislacao-consolidada/decreto-lei/2008-34455475 target=_blank>Decree Law 18/2008 - Code of Public Contracts(Decreto Lei que estabelece o Código dos Contractos Públicos, Adopted 29/01/2008, Last modification 21/07/2021, Articles 19 to 21.)</a></li><li><a href=https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=celex%3A32021R1953 target=_blank>Commission Delegated Regulation (EU) 2021/1853 in respect of the thresholds for supply, service and works contracts, and design contests(Commission Delegated Regulation (EU) 2021/1853  of 10 November 2021 amending Directive 2014/25/EU of the European Parliament and of the Council of 26 February 2014 on procurement by entities operating in the water, energy, transport and postal services sectors and repealing Directive 2004/17/EC (Text with EEA relevance), C/2021/7935, Article 1(1))</a></li></ul>