1982-596x 1982-596x S1982-596x2016000100447 10.14393/REVEDFIL.issn.0102-6801.v30n59a2016-p447a466 Portugal 00 06 2016 00 06 2016 30 59 447 466

11 44 44 405-523 3 41-53 440-441 187-204 348 596-608 extra extra 137-47 22 55-79 23 27-47 13 53-62