1665-5346
1665-5346
S1665-53462018000400483
10.21919/remef.v13i4.334
Austria
Austria
Japan
USA
Mexico
00
12
2018
00
12
2018
13
4
483
505
[
2015
105
2
2
564-608
]
[
2012
80
5
5
1977-2016
]
[
2017
1st
]
[
2014
]
[
2011
83
4
4
046127
]
[
2007
29
4
4
555-64
]
[
2014
104
3
3
898-930
]
[
2013
FP7-ICT-2011-7-288501-CRISIS
FP7-ICT-2011-7-288501-CRISIS
]
[
2017
]
[
1978
1
3
3
215-39
]
[
2000
32
3
3
611-38
]
[
2003
68
6
6
065103
]
[
1964
12
3
3
450-9
]
[
2013
497
7447
7447
51-9
]
[
1958
58
]
[
2008
]
[
2017
7
1
1
31-43
]
[
2014
9
3
3
695-752
]
[
2009
]
[
2013
392
24
24
6427-41
]
[
2008
42
7
7
1013-30
]
[
2011
90
1
1
111-21
]
[
2016
50
7
7
4091-101
]
[
2016
]
[
1999
]
[
2015
19
5
5
728-41
]
[
1976
12
5
5
297-312
]
[
2016
53
1
1
111-21
]
[
2015
10
12
12
]
[
1951
2
561-85
]
[
1966
31
4
4
581-603
]
[
1954
38
1
1
139-49
]
[
2010
27
3
3
431-2
]
[
2001
410
6825
6825
268-76
]
[
2005
189
3
3
251-69
]
[
2009
23
]
[
2015
23
3
3
575-605
]
[
UNSTATS
2007
]
[
1994
8
]
[
2015
112
20
20
6271-6
]