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Visscher AM, Paul AL, Kirst M, Guy CL, Schuerger AC, Ferl RJ.Visscher AM, et al. Among authors: ferl rj.PLoS One. 2010 Aug 23;5(8):e12348. doi: 10.1371/journal.pone.0012348.PLoS One. 2010.PMID: 20808807Free PMC article.
Manak MS, Paul AL, Sehnke PC, Ferl RJ.Manak MS, et al. Among authors: ferl rj.Life Support Biosph Sci. 2002;8(2):83-91.Life Support Biosph Sci. 2002.PMID: 11987307
Tucker R, Callaham JA, Zeidler C, Paul AL, Ferl RJ.Tucker R, et al. Among authors: ferl rj.Life Sci Space Res (Amst). 2020 Aug;26:1-9. doi: 10.1016/j.lssr.2020.03.006. Epub 2020 Mar 24.Life Sci Space Res (Amst). 2020.PMID: 32718674