Fonte:
http://dre.pt/pdf2sdip/2011/03/048000000/1125111253.pdf
http://dre.pt/pdf2sdip/2011/03/048000000/1125311260.pdf
http://dre.pt/pdf2sdip/2011/03/048000000/1126611268.pdf
http://dre.pt/pdf2sdip/2011/03/048000000/1127211274.pdf
