v13n1a04.pdf
https://www.cepese.pt/portal%2526quot%253B%26quot%26quot%26quot%26quot%26quot%26quot%26quot%26quot%26quot%26quot%26quot%26quot%26quot%26quot%26quot%26quot/pt/publicacoes/obras/volume-13-number-1-june-2015/artigos/v13n1a04.pdf/view
https://www.cepese.pt/portal%2526quot%253B%26quot%26quot%26quot%26quot%26quot%26quot%26quot%26quot%26quot%26quot%26quot%26quot%26quot%26quot%26quot%26quot/@@site-logo/CEPESE+home.png
v13n1a04.pdf