Dívida

http://www.mtsdata.com/content/data/public/pte/bulletin/
http://www.igcp.pt/fotos/editor2/2012/Relatorio_Anual/RELATORIO_ANUAL_2011_FINAL.pdf
http://www.igcp.pt/fotos/editor2/2012/Estatisticas/01-Annual_figures.xls
http://www.jornaldenegocios.pt/home.php?template=SHOWNEWS_V2&id=566253
http://ddp-ext.worldbank.org/ext/ddpreports/ViewSharedReport?&CF=&REPORT_ID=13523&REQUEST_TYPE=VIEWADVANCED