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Berdel D, Bonnacker I, Süverkrüp R, von Berg A, Buhr W.Berdel D, et al. Among authors: von berg a.Pneumologie. 1990 Feb;44 Suppl 1:285-6.Pneumologie. 1990.PMID: 2367391German.
Buhr W, Schneider PF, Knapp M, Landser FJ, von Berg A, Berdel D.Buhr W, et al. Among authors: von berg a.Pneumologie. 1990 Feb;44 Suppl 1:620-1.Pneumologie. 1990.PMID: 2367484German.
Bonnacker I, Berdel D, Süverkrüp R, von Berg A.Bonnacker I, et al. Among authors: von berg a.Eur J Clin Pharmacol. 1989;36(2):145-50. doi: 10.1007/BF00609186.Eur J Clin Pharmacol. 1989.PMID: 2721539
von Berg A, Berdel D.von Berg A, et al.Pediatr Pulmonol. 1989;7(2):89-93. doi: 10.1002/ppul.1950070207.Pediatr Pulmonol. 1989.PMID: 2797925Clinical Trial.
Reinhardt D, Berdel D, Heimann G, Kusenbach G, von Berg A, Johnson E, Steinijans VW, Staudinger H.Reinhardt D, et al. Among authors: von berg a.Chronobiol Int. 1987;4(3):369-80. doi: 10.3109/07420528709083526.Chronobiol Int. 1987.PMID: 3677217
Kozlik-Feldmann R, von Berg A, Berdel D, Reinhardt D.Kozlik-Feldmann R, et al. Among authors: von berg a.Eur J Med Res. 1996 Jul 25;1(10):465-70.Eur J Med Res. 1996.PMID: 9438143Clinical Trial.