This article has been retracted at the request of the Editors-in-Chief, according to the Publication Ethics Policy and Publication Malpractice Statement. Please see: http://revue.ummto.dz/index.php/JMES/about/editorialPolicies#custom-2 Reason : This paper duplicated parts of a master's thesis that had already appeared in the digital library of São Paulo University (Brazil) in May 2015, DOI:10.11606/D.18.2015.tde-27052015-171842. One of the conditions of submission of a paper for publication is

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... hat authors declare explicitly that they have written entirely original works, and should ensure that the sources of any ideas and/or words in the manuscript that are not their own have been properly attributed through appropriate citations and/or quotes. Plagiarism constitutes unethical publishing behaviour and is unacceptable. Any attempt of plagiarism should be followed by the rejection of the submitted manuscript. As such this article represents a severe abuse of the scientific publishing system. The scientific community takes a very strong view on this matter and we apologize to readers of the journal that this was not detected during the submission process. This note is published, 12 April 2020