1. Interpretation of the Commission Regarding the Integration of Environmental Considerations in Public Procurement Procedureshttps://ec.europa.eu/regional_policy/sources/docgener/guides/public_procurement/2018/guidance_public_procurement_2018_ro.pdf
2. 400—Public Procurement for Better Environmental Conditionshttps://ec.europa.eu/environment/archives/gpp/buying_green_handbook_ro.pdf
3. Directive UE no. 24/2014 Regarding Public Procurement, Transposed at National Level by Law no. 98/2016 Regarding Public Procurement, OUG no. 107/2017, OUG no. 45/2018, Respective HG no. 395/2016https://eur-lex.europa.eu/legal-content/RO/TXT/?uri=celex%3A32014L0024
4. Directive UE no. 23/2014 Regarding the Award of Concession Contracts, Transposed by Law no. 100/2016https://eur-lex.europa.eu/legal-content/RO/TXT/?uri=OJ%3AJOL_2014_094_R_0001_01
5. Directive UE no. 25/2014 Regarding the Acquisitions Made by the Entities that Operate in the Water, Energy, Transport and Postal Services Sectors, Transposed by Law no. 99/2016 Regarding Sectoral Acquisitions, Respectively by GD no. 394/2016 Regarding the Approval of the Implementing Norms Regarding the Award of Sectoral Contractshttps://eur-lex.europa.eu/legal-content/RO/TXT/PDF/?uri=CELEX:32014L0025&from=EN