v15n1a11.pdf https://digigov.cepese.pt/portal/pt/publicacoes/obras/volume-15-number-1-june-2017/artigos/v15n1a11.pdf/view https://digigov.cepese.pt/portal/@@site-logo/CEPESE+home.png v15n1a11.pdf v15n1a11.pdf — 129 KB