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Livnat A, Pacala SW, Levin SA.Livnat A, et al. Among authors: pacala sw.Am Nat. 2005 Mar;165(3):311-21. doi: 10.1086/428294. Epub 2005 Feb 4.Am Nat. 2005.PMID: 15729662
Osnas JLD, Katabuchi M, Kitajima K, Wright SJ, Reich PB, Van Bael SA, Kraft NJB, Samaniego MJ, Pacala SW, Lichstein JW.Osnas JLD, et al. Among authors: pacala sw.Proc Natl Acad Sci U S A. 2018 May 22;115(21):5480-5485. doi: 10.1073/pnas.1803989115. Epub 2018 May 3.Proc Natl Acad Sci U S A. 2018.PMID: 29724857Free PMC article.
Purves DW, Lichstein JW, Strigul N, Pacala SW.Purves DW, et al. Among authors: pacala sw.Proc Natl Acad Sci U S A. 2008 Nov 4;105(44):17018-22. doi: 10.1073/pnas.0807754105. Epub 2008 Oct 29.Proc Natl Acad Sci U S A. 2008.PMID: 18971335Free PMC article.