2393-6606
2393-6606
S2393-66062019000200066
10.22235/ech.v8i2.1844
Spain
España
00
12
2019
00
12
2019
8
2
66
84
[
2018
19
]
[
1992
]
[
1996
6
1
1
1-6
]
[
1997
]
[
1997
46
2
2
105-10
]
[
1988
]
[
2015
25
4
4
401-22
]
[
2009
41
1
1
1-2
]
[
2007
39
4
4
289
]
[
2016
48
6
6
531-2
]
[
2008
40
4
4
299
]
[
2007
39
3
3
207
]
[
2016
48
1
1
3-4
]
[
2016
48
2
2
117
]
[
2018
50
2
2
111-2
]
[
2015
47
6
6
485-6
]
[
1991
]
[
2017
49
4
4
359
]
[
2015
47
4
4
285-6
]
[
2015
64
4
4
231-4
]
[
2015
47
1
1
1-2
]
[
2010
42
3
3
233
]
[
2015
47
5
5
377-5
]
[
2002
]
[
2016
17
202-10
]
[
2013
22
1-2
1-2
111-4
]
[
2011
43
4
4
329
]
[
2017
49
5
5
469
]
[
2018
50
239-40
]
[
2012
44
3
3
203-4
]
[
2016
48
5
5
435-6
]
[
2014
46
4
4
217
]
[
2011
43
2
2
105-6
]
[
2008
40
2
2
99-100
]
[
2008
40
3
3
203
]
[
2010
42
4
4
357
]
[
2009
41
4
4
329
]
[
2010
17
6
6
741-8
]
[
2011
43
3
3
221-2
]
[
1985
7
4
4
59-71
]
[
2014
46
5
5
303
]
[
2014
46
6
6
389-90
]
[
2008
40
1
1
1-2
]
[
2012
44
4
4
311-2
]
[
2014
16
3
3
141-52
]
[
2016
17
3
3
173-81
]
[
2009
41
2
2
113
]
[
2016
48
4
4
333
]
[
2014
46
2
2
73
]
[
2010
10
319-21
]
[
2012
44
1
1
]
[
2013
45
2
2
105-6
]
[
2010
42
1
1
1-2
]
[
2015
47
3
3
195-6
]
[
2012
44
2
2
109-10
]
[
2017
49
2
2
125-6
]
[
2016
20
163-70
]
[
2016
48
3
3
221-2
]
[
2013
45
4
4
327
]
[
2000
32
5
5
1041-3
]
[
2001
36
1
1
1-2
]
[
2006
6
123-6
]
[
2008
8
73-5
]
[
2008
17
8
8
981-2
]
[
2010
30
489-91
]
[
2010
10
319-21
]
[
2007
7
123-7
]
[
2009
29
816-20
]
[
2009
29
7
7
691-3
]
[
2018
1
25-36
]