0121-5051
0121-5051
S0121-50512017000200023
10.15446/innovar.v27n64.62366
Portugal
Portugal
Portugal
00
06
2017
00
06
2017
27
64
23
36
[
2013
27
1
1
74-82
]
[
2008
11
4
4
371-81
]
[
ANACOM
2011
]
[
2002
]
[
2005
39
7
7
910-25
]
[
1988
16
77-94
]
[
1980
88
3
3
588-606
]
[
2009
73
3
3
52-68
]
[
1982
42
1
1
116-31
]
[
2001
]
[
2001
65
2
2
81-93
]
[
2004
41
6
6
685-95
]
[
2006
34
4
4
613-27
]
[
2009
33
468-76
]
[
1996
1
1
1
16-29
]
[
1997
14
405-20
]
[
2010
30
4
4
289-300
]
[
2002
17
2
2
107-18
]
[
1981
18
1
1
39-50
]
[
1996
60
4
4
7-18
]
[
2000
64
65-87
]
[
2002
3
1
1
27-51
]
[
2003
27
1
1
51-90
]
[
2006
]
[
2003
37
11
11
1762-800
]
[
1999
6
1
1
1-55
]
[
2006
16
37-50
]
[
2012
36
8
8
636-49
]
[
2004
28
2
2
145-59
]
[
2004
32
3
3
293-311
]
[
2009
29
4
4
309-20
]
[
2006
43
3
3
271-82
]
[
1979
]
[
1996
1
2
2
130-49
]
[
2010
]
[
2001
65
82-104
]
[
2001
38
1
1
131-42
]
[
2015
28
3
3
253-66
]
[
1994
58
3
3
20-38
]
[
2013
20
5
5
404-23
]
[
1980
17
4
4
460-9
]
[
1981
57
3
3
25-48
]
[
1997
]
[
1988
64
1
1
12-40
]
[
1999
]
[
2003
14
3
3
374-95
]
[
1996
]
[
2000
78
4
4
105-13
]
[
1998
23
3
3
393-404
]
[
2012
6
45
45
11190-201
]
[
1999
15
53-67
]
[
2003
20
2
2
153-75
]
[
2008
75
6
6
854-74
]
[
1996
60
3
3
15-32
]
[
1998
12
6
6
426-40
]
[
2000
Buenos Aires
215-24
]
[
2004
14
2
2
169-82
]
[
2007
24
9
9
908-26
]
[
2004
6
341-52
]
[
2010
17
532-40
]
[
1988
52
3
3
2-22
]
[
1996
60
2
2
31-46
]