0212-9728
0212-9728
S0212-97282018000200003
10.6018/analesps.34.2.290171
Spain
Spain
00
00
2018
00
00
2018
34
2
233
240
[
1997
38
4
4
413-20
]
[
1990
47
7
7
615-21
]
[
2010
]
[
2004
11
3
3
191-206
]
[
2007
23
2
2
184-92
]
[
1985
6
4
4
527-9
]
[
2004
11
230-41
]
[
2003
84
4
4
822-48
]
[
2014
13
3
3
296-305
]
[
2007
44
581-8
]
[
2009
114
1
1
17-24
]
[
2007
37
4
4
513-28
]
[
2009
]
[
2011
37
1
1
84-93
]
[
2010
26
1
1
41-8
]
[
2009
30
1
1
63-73
]
[
2012
53
6
6
893-9
]
[
2005
35
1
1
5-12
]
[
2004
57
1
1
35-43
]
[
2003
38
149-54
]
[
2010
78
2
2
169-83
]
[
1998
155
1437-9
]
[
2014
42
1
1
1-8
]
[
2001
21
8
8
1125-41
]
[
1994
]
[
2011
41
1
1
1-6
]
[
2008
34
3
3
444-57
]
[
2007
]
[
2008
11
2
2
251-60
]
[
2006
2
4
4
473-85
]
[
1996
153
9
9
1178-84
]
[
2007
93
1
1
144-51
]
[
2006
34
2
2
94-104
]
[
2010
36
2
2
347-58
]
[
2006
41
3
3
183-90
]
[
2008
13
3
3
205-17
]
[
2008
196
3
3
190-7
]
[
2014
17
E20
E20
]
[
2013
18
5
5
422-36
]
[
2004
30
4
4
1005-22
]
[
2007
92
1-14
]
[
2006
36
2
2
231-8
]
[
2009
166
5
5
567-74
]
[
2008
118
230-7
]
[
2002
]
[
2005
193
4
4
265-72
]
[
2007
66
67
67
5-30
]
[
2012
38
3
3
531-42
]
[
2015
10
3
3
e0121347
]
[
2012
40
1
1
19-26
]
[
2012
11
2
2
110-3
]
[
2009
39
2
2
179-95
]
[
2002
54
1
1
59-65
]
[
1998
29
247-54
]
[
2006
188
519-26
]