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<strong>Global Journal of Science Frontier Research</strong>, [S.l.], sep. 2015.
ISSN 2249-4626.
Available at: &lt;<a href="https://journalofscience.org/index.php/GJSFR/article/view/1645" target="_new">https://journalofscience.org/index.php/GJSFR/article/view/1645</a>&gt;. Date accessed: 24 may 2022.