0212-9728
0212-9728
S0212-97282021000200005
10.6018/analesps.37.2.336241
Spain
00
09
2021
00
09
2021
37
2
233
242
[
1961
]
[
2016
17
59-80
]
[
2011
]
[
1992
9
15-37
]
[
2005
17
582-9
]
[
2016
17
793-815
]
[
2007
8
1-14
]
[
2002
21
249-63
]
[
1998
22
7-16
]
[
1990
]
[
1997
]
[
2018
19
123-43
]
[
2004
10
1-25
]
[
2006
]
[
1985
49
71-5
]
[
1998
9
33-7
]
[
2007
38
401-12
]
[
2014
]
[
2003
4
]
[
1999
]
[
2010
7
]
[
2016
1
1
51-62
]
[
IBM Corp.
2013
]
[
1999
]
[
2014
30
3
3
1151-69
]
[
2018
15
17-24
]
[
1999
46
137-55
]
[
2008
]
[
2005
9
111-31
]
[
2014
13
15-30
]
[
2011
12
267-87
]
[
2011
103
1
1
]
[
2012
13
79-101
]
[
2012
]
[
2013
3-16
]
[
2017
28
59-63
]
[
2014
15
555-78
]
[
2018
19
483-504
]
[
2014
]
[
2006
]
[
2005
6
25-41
]
[
2007
2
149-56
]
[
1932
]
[
2017
18
1305-17
]
[
1961
]
[
2001
52
141-66
]
[
1989
57
1069-81
]
[
2010
13
617-28
]
[
2002
]
[
2006
7
55-86
]
[
2006
7
183-225
]
[
2011
7
7-26
]
[
1994
3
87-116
]
[
2003
4
437-57
]
[
2014
15
85-118
]