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Mendel MJ, Toi VV, Riva CE, Petrig BL.Mendel MJ, et al. Among authors: riva ce.J Opt Soc Am A. 1993 Jul;10(7):1663-9. doi: 10.1364/josaa.10.001663.J Opt Soc Am A. 1993.PMID: 8350156