0871-9187
0871-9187
S0871-91872021000200144
10.21814/rpe.22282
Portugal
Portugal
30
12
2021
30
12
2021
34
2
144
160
[
2007
]
[
2014
13
1
1
]
[
2010
]
[
2014
14
2
2
99-110
]
[
2010
]
[
1998
98
]
[
2015
]
[
2019
]
[
2007
]
[
2013
22
4
4
]
[
1986
]
[
1985
24
1
1
6-12
]
[
1989
2
]
[
2002
]
[
1988
]
[
2010
]
[
2006
1
127-40
]
[
1999
1
]
[
2017
5
3
3
1-20
]
[
2017
7
^s1
^s1
1
3-17
]
[
1993
5
1-2
1-2
31-52
]
[
2006
24
3
3
209-17
]
[
2016
15
4
4
76-103
]
[
2007
78
47-69
]
[
2017
305-19
]
[
2003
]
[
2019
41
3
3
280-92
]