1646-933x 1646-933x S1646-933x2014000200026 10.1646‐933X-v7n2201407120003 Portugal Portugal Portugal Portugal 00 12 2014 00 12 2014 7 2 26 38

13 1 1 12 12 1143-168 10 3 3 393-411 16 12 12 7 3 3 203-20 14 14 875-901 24 1816-836