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Margulis W, Laurell F.Margulis W, et al. Among authors: laurell f.Opt Lett. 1996 Nov 1;21(21):1786-8. doi: 10.1364/ol.21.001786.Opt Lett. 1996.PMID: 19881801
Malmström M, Margulis W, Tarasenko O, Pasiskevicius V, Laurell F.Malmström M, et al. Among authors: laurell f.Opt Express. 2012 Jan 30;20(3):2905-10. doi: 10.1364/OE.20.002905.Opt Express. 2012.PMID: 22330528Free article.