0212-9728
0212-9728
S0212-97282018000200010
10.6018/analesps.34.2.272401
Portugal
Portugal
Portugal
00
00
2018
00
00
2018
34
2
291
297
[
2008
]
[
2010
60
4
4
441-58
]
[
2014
26
4
4
495-518
]
[
2012
53
1
1
1-25
]
[
2012
7
2
2
112-21
]
[
2009
73
4
4
1-7
]
[
2010
66
2
2
422-31
]
[
2012
7
3
3
219-44
]
[
2005
a
]
[
2005
b
]
[
1985
]
[
1993
]
[
2013
2
3
3
139-51
]
[
1990
]
[
2011
42
1
1
69-72
]
[
2016
3
1
1
108-24
]
[
2015
25
61
61
173-81
]
[
2014
32
2
2
81-96
]
[
2015
65-74
]
[
2012
17
3
3
1-13
]
[
2012
]
[
2014
5
]
[
2006
2006
San Francisco, California
]
[
2014
28
4
4
518-30
]
[
2015
]
[
2000
2nd ed
]
[
2005
2nd ed
]
[
2011
45
6
6
625-35
]
[
2009
4
1
1
70-6
]
[
2010
48
1
1
54-8
]
[
2011
14
1
1
59-73
]
[
2008
11
1
1
266-74
]
[
2010
]
[
2015
]
[
2008
22-23
25-66
]
[
2013
2013
1-13
]
[
2011
22
1
1
43-54
]
[
2005
]
[
1987
16
1
1
118-54
]