Fonte:
http://dre.pt/pdf1sdip/2009/03/06200/0191201912.pdf
http://dre.pt/pdf1sdip/2009/03/06200/0191201913.pdf
http://dre.pt/pdf1sdip/2009/03/06200/0191301913.pdf
http://dre.pt/pdf1sdip/2009/03/06200/0191301915.pdf
http://dre.pt/pdf1sdip/2009/03/06200/0191601918.pdf
