European Environment Agency: European Community emission inventory report 1990–2007 under the UNECE Convention on Long-range Transboundary Air Pollution (LRTAP). Office for Official Publications of the European Communities, Luxembourg 2009. ISBN 978-92-9213-005-3. ISSN1830-8139. EEA Technical report series: ISSN1725-2237. doi:10.2800/12414, Seite 41 und 44, abgerufen am 28. August 2018.
European Environment Agency: European Community emission inventory report 1990–2007 under the UNECE Convention on Long-range Transboundary Air Pollution (LRTAP). Office for Official Publications of the European Communities, Luxembourg 2009. ISBN 978-92-9213-005-3. ISSN1830-8139. EEA Technical report series: ISSN1725-2237. doi:10.2800/12414, Seite 41 und 44, abgerufen am 28. August 2018.