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Gordillo LF, Marion SA, Martin-Löf A, Greenwood PE.Gordillo LF, et al. Among authors: greenwood pe.Bull Math Biol. 2008 Feb;70(2):589-602. doi: 10.1007/s11538-007-9269-y. Epub 2007 Nov 9.Bull Math Biol. 2008.PMID: 17992563