0003-2573 0003-2573 S0003-25732020000400835 10.31447/as00032573.2020237.06 Portugal Portugal 00 12 2020 00 12 2020 237 835 838 2009 405-22 2008 3 3 3 313-30 2008 2009 47 3 3 123-55 2013 36 1637-46 2013 39 2 2 183-200 2006 2015 2012 2010 2015 2015 SERVIÇOS DE ESTRANGEIROS E FRONTEIRAS 2015 2015 21 43 43 105-27