Fonte:
http://www.dre.pt/pdf1sdip/2008/03/05700/0162701627.PDF
http://www.dre.pt/pdf1sdip/2008/03/05100/0156601567.PDF
http://www.dre.pt/pdf2sdip/2008/04/069000000/1556315564.pdf
http://www.dre.pt/pdf2sdip/2008/05/088000000/2048220482.pdf