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Lawrence JG, Ochman H, Hartl DL.Lawrence JG, et al. Among authors: hartl dl.J Gen Microbiol. 1991 Aug;137(8):1911-21. doi: 10.1099/00221287-137-8-1911.J Gen Microbiol. 1991.PMID: 1955870
DuBose RF, Dykhuizen DE, Hartl DL.DuBose RF, et al. Among authors: hartl dl.Proc Natl Acad Sci U S A. 1988 Sep;85(18):7036-40. doi: 10.1073/pnas.85.18.7036.Proc Natl Acad Sci U S A. 1988.PMID: 3045828Free PMC article.