0212-9728
0212-9728
S0212-97282019000200009
10.6018/analesps.35.2.356791
Spain
Spain
00
00
2019
00
00
2019
35
2
242
250
[
2016
68
2
2
174-92
]
[
2017
73
263-72
]
[
2016
25
1
1
308-20
]
[
2016
4
2
2
376-86
]
[
2010
26
5
5
1089-97
]
[
2015
15
76-96
]
[
1986
]
[
2014
51
1
1
70-8
]
[
2016
58
2
2
235
]
[
2015
16
1
1
1-47
]
[
2013
25
3
3
299-306
]
[
2016
57
219-29
]
[
2016
31
7
7
850-7
]
[
2016
63
1
1
183-94
]
[
2014
17
2
2
31-42
]
[
2014
396-406
]
[
2012
]
[
2015
64
6-11
]
[
2013
37
6
6
497-8
]
[
2016
5
1
1
85-98
]
[
2015
17
56-60
]
[
2012
29
6
6
736-59
]
[
2015
8
331
331
2-6
]
[
2014
32
61-6
]
[
1998
]
[
2016
]
[
2014
39
1
1
3-6
]
[
Statista
2017
]
[
2014
39
2
2
111-3
]
[
2017
43
2
2
274-80
]
[
2012
28
8
8
500-10
]