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DOYMA, E. (2016). Journal of Optometry (October-December 2016, Vol. 9, n.4, page 258-263). Spanish: Elsevier Espana.

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DOYMA, Elsevier. "Journal of Optometry". October-December 2016, Vol. 9, n.4, page 258-263 Spanish: Elsevier Espana, 2016. Text.