0122-8285
0122-8285
S0122-82852020000100007
10.5294/pacla.2020.23.1.7
Spain
Spain
Spain
00
03
2020
00
03
2020
23
1
[
1996
9
4
4
41-50
]
[
1986
8
8
165-86
]
[
2006
15
3
3
279-95
]
[
1957
35
5
5
113-24
]
[
1975
53
1
1
97-106
]
[
2014
5
2
2
212-39
]
[
1980
1
1
1
7-22
]
[
2008
2
3
3
453-62
]
[
2013
10
1
1
63-78
]
[
2016
66
1
1
35-59
]
[
2018
9
2
2
167-84
]
[
2003
16
4
4
213-33
]
[
2003
16
3
3
141-57
]
[
2014
23
1
1
91-112
]
[
1988
22
1
1
57-68
]
[
2017
53
53
114-44
]
[
2018
40
2
2
285-95
]
[
2015
12
1
1
49-65
]
[
2016
10
10
3585-614
]
[
2016
33
2
2
674-82
]
[
2014
13
13
144-62
]
[
1995
8
2
2
61-76
]
[
2005
18
3
3
183-202
]
[
1987
1
2
2
99-107
]
[
2003
5
4
4
251-61
]
[
1980
70
5
5
950-9
]
[
1997
26
2
2
24-35
]
[
1994
15
^sS2
^sS2
S2
149-65
]
[
2001
74
3
3
409-31
]
[
2016
243-61
]
[
2013
311-25
]
[
2016
]
[
Ofcom
2017
]
[
2014
11
2
2
57-78
]
[
2010
21
4
4
859-73
]
[
2004
17
4
4
261-78
]
[
2014
15
5
5
1-11
]
[
PwC
2016
]
[
2016
]
[
2002
]
[
2015
16
3
3
305-23
]
[
1981
89
6
6
1228-38
]
[
1981
10
1
1
30-48
]
[
1958
1
1
1
54-71
]
[
1989
13
2
2
273-305
]
[
2017
97-117
]
[
2018
201-18
]
[
2018
20
1
1
51-77
]
[
2001
34
4
4
489-506
]
[
1995
8
2
2
15-26
]
[
2002
19
1
1
171-295
]