2588-0934
2588-0934
S2588-09342020000200035
10.37785/nw.v4n2.a2
Spain
Spain
00
12
2020
00
12
2020
4
2
35
47
[
2010
36
36
]
[
1993
50
50
]
[
2015
]
[
1996
]
[
2005
II
576-619
]
[
1996
]
[
2000
]
[
1989
]
[
2016
]
[
2014
26
26
21-8
]
[
2007
]
[
1979
]
[
1972
]
[
2004
]
[
2008
]
[
2014
12
12
40-51
]
[
2013
]
[
1998
]
[
2011
39
39
20-3
]
[
1999
]
[
2012
3
]
[
1995
]
[
1993
]
[
]
[
2008
51
51
13-37
]