1. Epidemiology of clinical allergy. Monogr Allergy;Burr,1993
2. Epidemiologie allergischer Erkrankungen;Ring,1991
3. Allergens and pollutants in the air—a complex interaction;Behrendt,1991
4. Impact of pollution in allergic diseases: clinical and epidemiological studies;Ring,1995
5. Allergy and IgE production: role of infection and environmental pollution;Ring;Allergo J,1993