Fonte:
http://dre.pt/pdf1sdip/2011/01/02000/0059000591.pdf
http://dre.pt/pdf1sdip/2011/01/02000/0059100592.pdf
http://dre.pt/pdf1sdip/2011/01/02000/0059200593.pdf
http://dre.pt/pdf1sdip/2011/01/02000/0059500595.pdf
http://dre.pt/pdf1sdip/2011/01/02000/0059500602.pdf
