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Koken SE, van Wamel JL, Goudsmit J, Berkhout B, Geelen JL.Koken SE, et al. Among authors: berkhout b.Virology. 1992 Dec;191(2):968-72. doi: 10.1016/0042-6822(92)90274-s.Virology. 1992.PMID: 1448931
Das AT, Koken SE, Essink BB, van Wamel JL, Berkhout B.Das AT, et al. Among authors: berkhout b.FEBS Lett. 1994 Mar 14;341(1):49-53. doi: 10.1016/0014-5793(94)80238-6.FEBS Lett. 1994.PMID: 7511112Free article.