Fonte:
http://www.dgsi.pt/jsta.nsf/35fbbbf22e1bb1e680256f8e003ea931/1b5bab7343aad6fa80257673003e64a6?OpenDocument
http://www.dgsi.pt/jsta.nsf/35fbbbf22e1bb1e680256f8e003ea931/ad8006f68372fb1980257672003628aa?OpenDocument