Fonte:
http://dre.pt/pdf1sdip/2010/12/24901/0000200012.pdf
http://dre.pt/pdf1sdip/2010/12/24901/0001200015.pdf
http://dre.pt/pdf1sdip/2010/12/25000/0594005943.pdf
http://dre.pt/pdf1sdip/2010/12/25000/0594305943.pdf
