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Christmann A, Walter K, Wentzel A, Krätzner R, Kolmar H.Christmann A, et al.Protein Eng. 1999 Sep;12(9):797-806. doi: 10.1093/protein/12.9.797.Protein Eng. 1999.PMID: 10506290
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Glotzbach B, Reinwarth M, Weber N, Fabritz S, Tomaszowski M, Fittler H, Christmann A, Avrutina O, Kolmar H.Glotzbach B, et al. Among authors: christmann a.PLoS One. 2013 Oct 11;8(10):e76956. doi: 10.1371/journal.pone.0076956. eCollection 2013.PLoS One. 2013.PMID: 24146945Free PMC article.