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Bonin O, Schmidt I, Schmidt K, Enders-Ruckle G, Berkes I.Bonin O, et al.Arch Gesamte Virusforsch. 1971;33(3):211-24. doi: 10.1007/BF01254677.Arch Gesamte Virusforsch. 1971.PMID: 4256444No abstract available.
Irtel von Brenndorff A, Enders-Ruckle G, Hagge W.Irtel von Brenndorff A, et al. Among authors: enders ruckle g.Med Monatsschr. 1973 Jun;27(6):265-8.Med Monatsschr. 1973.PMID: 4722165German.No abstract available.