http://www.ecb.int/stats/acc/html/index.en.html
http://www.ecb.int/press/key/date/2002/html/sp020309.en.html
http://www.ecb.int/press/key/date/2004/html/sp041112.en.html
http://www.ecb.int/press/key/date/2003/html/sp030227.en.html
http://www.ecb.int/press/key/date/1999/html/sp990309.en.html
http://www.ecb.int/pub/pdf/other/reviewoftheinternationalroleoftheeuro2007en.pdf
http://www.ecb.int/pub/pdf/other/euro-international-role200512en.pdf