1. Air Quality in Europe-2019 Report,2019
2. Pollution and the Atmosphere: Designs for Reduced Emissions;Ragazzi,2017
3. Greenhouse Gas Emissionstatistics—Emissioninventories
https://ec.europa.eu/eurostat/statistics-explained/pdfscache/1180.pdf
4. United Nations Framework Convention on Climate Change—Declarations
https://eur-lex.europa.eu/eli/convention/1994/69/oj
5. Kyoto Protocol on Climate Change
https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=LEGISSUM:l28060&from=SK