Fonte:
http://www.dre.pt/pdf1sdip/2008/02/02400/0089800898.PDF
http://www.dre.pt/pdf1sdip/2008/02/02500/0090700907.PDF
http://www.dre.pt/pdf1sdip/2008/02/02600/0092800933.PDF
http://www.dre.pt/pdf2sdip/2008/02/024000000/0460904629.pdf
