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Strub K, Walter P.Strub K, et al.Proc Natl Acad Sci U S A. 1989 Dec;86(24):9747-51. doi: 10.1073/pnas.86.24.9747.Proc Natl Acad Sci U S A. 1989.PMID: 2557625Free PMC article.
Weichenrieder O, Wild K, Strub K, Cusack S.Weichenrieder O, et al. Among authors: strub k.Nature. 2000 Nov 9;408(6809):167-73. doi: 10.1038/35041507.Nature. 2000.PMID: 11089964