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Nunberg JH, Kaufman RJ, Schimke RT, Urlaub G, Chasin LA.Nunberg JH, et al. Among authors: kaufman rj.Proc Natl Acad Sci U S A. 1978 Nov;75(11):5553-6. doi: 10.1073/pnas.75.11.5553.Proc Natl Acad Sci U S A. 1978.PMID: 281704Free PMC article.
Kaufman RJ, Brown PC, Schimke RT.Kaufman RJ, et al.Proc Natl Acad Sci U S A. 1979 Nov;76(11):5669-73. doi: 10.1073/pnas.76.11.5669.Proc Natl Acad Sci U S A. 1979.PMID: 293670Free PMC article.