Fonte:
http://info.portaldasfinancas.gov.pt/NR/rdonlyres/C47C9564-B4E7-469C-A426-459545614D41/0/Inf_Vinc_IRC%20Procº%20451_2011.pdf
http://info.portaldasfinancas.gov.pt/NR/rdonlyres/EEA15841-956F-411C-A4D6-0171E3ABD1E3/0/Inf_Vinc_IRC%20procº%203433_2009.pdf
http://info.portaldasfinancas.gov.pt/NR/rdonlyres/64010F84-3C68-41BD-9917-782E3480A5C8/0/Inf_Vinc_IRC%20Procº%201801_2010.pdf
http://info.portaldasfinancas.gov.pt/NR/rdonlyres/38FC625C-31E2-44F0-BD5B-67E41D6DE3DC/0/Inf_Vinc_IRC%20Procº%2039_2011.pdf
