Fonte:
http://dre.pt/pdf1sdip/2010/01/00200/0002300023.pdf
http://dre.pt/pdf1sdip/2010/01/00200/0002600027.pdf
http://dre.pt/pdf2sdip/2010/01/002000000/0007400074.pdf
http://dre.pt/pdf2sdip/2010/01/002000000/0008600086.pdf