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[1]
| 2017
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![](images/imprime.png) |
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[2]
| 2016
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![](images/imprime.png) |
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[3]
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![](images/imprime.png) |
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[4]
![](images/www.png) English Last accessed : 2015/11/25
![](images/www.png) French Last accessed : 2015/11/25
![](images/www.png) Spanish Last accessed : 2015/11/25
![](images/www.png) Russian Last accessed : 2015/11/25
![](images/www.png) Chinese Last accessed : 2015/11/25
![](images/www.png) Catalan Last accessed : 2015/11/25
| 2015
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![](images/imprime.png) |
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[5]
| 2014
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![](images/imprime.png) |
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[6]
![](images/www.png) http://www.sciencedirect.com Last accessed : 2016/08/08
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![](images/imprime.png) |
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