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Haeffelin M, Kato S, Smith AM, Rutledge CK, Charlock TP, Mahan JR.Haeffelin M, et al. Among authors: mahan jr.Appl Opt. 2001 Feb 1;40(4):472-84. doi: 10.1364/ao.40.000472.Appl Opt. 2001.PMID: 18357021