Fonte:
http://dre.pt/pdf1sdip/2008/08/16400/0595305957.pdf
http://dre.pt/pdf1sdip/2009/03/05000/0164701647.pdf
http://dre.pt/pdf1sdip/2009/03/05000/0164801651.pdf
http://dre.pt/pdf2sdip/2009/03/050000000/0949509496.pdf
http://dre.pt/pdf2sdip/2009/03/050000000/0949909499.pdf
