H. R. Hübner

[Croup and air pollutants: results of a two-year prospective longitudinal study].

H. Wichmann, A. Röll, G. Hörz, 1991, Zentralblatt fur Hygiene und Umweltmedizin = International journal of hygiene and environmental medicine.

[The significance of health risks caused by outdoor pollution, demonstrated by cross-sectional studies of pseudocroup in Baden-Württemberg].

H. Wichmann, E. Malin, R. Huenges, 1989, Das Offentliche Gesundheitswesen.