Fonte:
http://dre.pt/pdf1sdip/2011/03/05100/0142201425.pdf
http://dre.pt/pdf1sdip/2011/03/05100/0142501430.pdf
http://dre.pt/pdf1sdip/2011/03/05100/0143101435.pdf
http://dre.pt/pdf1sdip/2011/03/05100/0143501443.pdf
