2218-3620
2218-3620
S2218-36202019000100279
Ecuador
00
03
2019
00
03
2019
11
1
279
288
[
2016
221
221
278-86
]
[
2005
]
[
2016
60
5
5
261
]
[
British Standards Institution
2015
70
5
5
218
]
[
2014
]
[
2018
174
174
1642-52
]
[
2018
24
1
1
33-41
]
[
2013
63
29-35
]
[
International Organization for Standardization
2018
]
[
Isotools
2018
]
[
Isotools
2018
]
[
2016
48-49
48-49
41-55
]
[
2009
27
6
6
495-511
]
[
2012
58
1466-75
]
[
2006
]