<ul><li><a href=https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX%3A02014L0024-20220101 target=_blank>Directive 2014/25/EU on procurement by entities operating in the water, energy, transport and postal services sectors(Directive 2014/24/EU of the European Parliament and of the Council of 26 February 2014 on public procurement and repealing Directive 2004/18/EC. Last amended on the 18th of  December 2018 by the Commission delegated Regulation 2017/2364. Article 18-19)</a></li></ul>