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Barthel E, Krecklow B.Barthel E, et al. Among authors: krecklow b.Z Erkr Atmungsorgane. 1984;163(1):61-4.Z Erkr Atmungsorgane. 1984.PMID: 6485395German.
Barthel E, Krecklow K, Krecklow B.Barthel E, et al. Among authors: krecklow b.Z Gesamte Hyg. 1977 Sep;23(9):636-9.Z Gesamte Hyg. 1977.PMID: 930150German.No abstract available.