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Doym, E. (2016). Journal of Optometry (January-March 2016, Vol. 9, n.1, page 64-70). Spanish: Elsevier Espana.

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Doym, Elsevier. "Journal of Optometry". January-March 2016, Vol. 9, n.1, page 64-70 Spanish: Elsevier Espana, 2016. Text.