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May KA, Georgeson MA.May KA, et al. Among authors: georgeson ma.Vision Res. 2007 Jun;47(13):1705-20. doi: 10.1016/j.visres.2007.02.012. Epub 2007 Apr 17.Vision Res. 2007.PMID: 17442367Free article.
May KA, Georgeson MA.May KA, et al. Among authors: georgeson ma.Vision Res. 2007 Jun;47(13):1721-31. doi: 10.1016/j.visres.2007.02.018. Epub 2007 Apr 30.Vision Res. 2007.PMID: 17467769Free article.
Wallis SA, Georgeson MA.Wallis SA, et al. Among authors: georgeson ma.J Vis. 2012 Dec 21;12(13):18. doi: 10.1167/12.13.18.J Vis. 2012.PMID: 23262150Free article.