2007-2422
2007-2422
S2007-24222018000300029
10.24850/j-tyca-2018-03-02
Ecuador
Spain
00
06
2018
00
06
2018
9
3
29
46
[
1999
20
6
6
426-8
]
[
2004
10
3
3
457-64
]
[
2016
16
74
]
[
2015
43
9
9
971-6
]
[
2002
15
3
3
506-26
]
[
2002
51
4
4
269
]
[
2008
]
[
2012
52
2
2
269-74
]
[
2016
103-13
]
[
2012
29
2
2
272-6
]
[
2003
24
8
8
580-3
]
[
2001
55
6
6
23-5
]
[
2003
24
8
8
569-74
]
[
1999
175
1
1
69-77
]
[
2011
3
3
3
286-96
]
[
2017
14
10
10
1125
]
[
2013
13
3
3
184-90
]
[
2002
36
18
18
4433-44
]
[
2001
35
17
17
4217-25
]
[
2003
37
12
12
961-6
]
[
2002
68
6
6
2711-5
]
[
2000
101
398
398
7-13
]
[
2003
69
5
5
2540-7
]
[
2003
171
171
]
[
2015
3
67
]
[
2013
4
4
4
307-14
]
[
2003
24
8
8
575-9
]
[
2003
24
8
8
563-8
]
[
2000
54
81-127
]
[
2016
102
1-10
]
[
UNE-ISO 11731:2007
2007
]
[
2003
69
9
9
5463-71
]