APA – Agência Portuguesa do Ambiente

http://apambiente.pt

DG Environment , European Commission

http://ec.europa.eu/environment

EEA European Environment Agency

http://www.eea.europa.eu/

Instituto de Saúde Pública da Universidade do Porto

http://www.ispup.up.pt

Instituto Nacional de Saúde Doutor Ricardo Jorge

http://www.insa.pt

International Institute for Applied Systems Analysis (IIASA)

http://www.iiasa.ac.at/

World Health Organization

http://www.who.int/