2307-2113
2307-2113
S2307-21132020000200007
Cuba
01
06
2020
01
06
2020
31
2
[
2008
6
]
[
Searchenginejournal.com
2020
]
[
2015
5
3
3
19-27
]
[
2018
12
2
2
111-28
]
[
2013
4
1
1
177-86
]
[
2014
1296-9
]
[
2015
6
2
2
65-72
]
[
2016
689
]
[
2013
543-7
]
[
2013
23
4
4
381-443
]
[
2013
527-38
]
[
2016
5
]
[
2010
]
[
Searchengineland.com
c202
0
]
[
2017
4
3
3
]
[
2017
4
5
5
]
[
2019
]