Ventura-Lucas, M. R. ., Marques, C. ., de Belém Martins, M. . and Fragoso, R. . (2011) “Portuguese agriculture and its role in multifunctional rural development”, Applied Studies in Agribusiness and Commerce, 5(1-2), pp. 39–46. doi: 10.19041/APSTRACT/2011/1-2/5.