0212-9728
0212-9728
S0212-97282019000100009
10.6018/analesps.35.1.302131
Portugal
00
03
2019
00
03
2019
35
1
68
74
[
2001
]
[
1993
6
16
]
[
2004
38
505-13
]
[
2006
1
227-33
]
[
2000
28
57-68
]
[
2004
22
281-94
]
[
2001
31
1381-405
]
[
2004
14
153-68
]
[
2005
16
2
2
91-103
]
[
2005
8
12-20
]
[
2012
47
1-12
]
[
1999
26
1025-34
]
[
2002
37
343-52
]
[
2002
33
270-85
]
[
2006
25
119-45
]
[
1999
]
[
2007
42
169-79
]
[
2012
22
118-22
]
[
2011
14
99-110
]
[
2012
3
57-66
]
[
2006
140
6
6
591-602
]
[
2007
42
2
2
124-33
]
[
2009
46
541-6
]
[
2016
35
380-96
]
[
2015
52
6
6
436-44
]
[
2008
19
189-204
]
[
2010
20
669-76
]
[
2000
29
869-80
]
[
1997
]
[
2006
146
645-55
]
[
2011
21
493-504
]
[
2013
153
399-423
]
[
2009
100
429-42
]