1982-7806 1982-7806 S1982-78062017000300666 10.14393/che-v16n3-2017-7 Portugal 00 12 2017 00 12 2017 16 3 666 683

34 1 1 41-66 26 2 2 85-109 4 33-48 1 9-44 1 1 1 128-47 6 9 9 7-25