Fonte:
http://dre.pt/pdf1sdip/2011/05/09800/0287702879.pdf
http://dre.pt/pdf1sdip/2011/05/09800/0287902880.pdf
http://dre.pt/pdf1sdip/2011/05/09800/0288002882.pdf
http://dre.pt/pdf1sdip/2011/05/09800/0288302883.pdf
