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DOYMA, E. (2015). Journal of Optometry (October-December 2015, Vol. 8, n.4, page 244-251). Spanish: Elsevier Espana.

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DOYMA, Elsevier. "Journal of Optometry". October-December 2015, Vol. 8, n.4, page 244-251 Spanish: Elsevier Espana, 2015. Text.