Fonte:
http://dre.pt/pdf1sdip/2010/04/08300/0147201476.pdf
http://dre.pt/pdf1sdip/2010/05/08700/0159101592.pdf
http://dre.pt/pdf1sdip/2010/06/11800/0217002198.pdf
http://dre.pt/pdf2sdip/2010/06/118000000/3372833730.pdf
