1. Effects of air pollutants on insect populations;Alstad;Ann. Rev. Ent.,1982
2. “Waldsterben”: forest pests and air pollution;Baltensweiler;Z. ang. Ent.,1985
3. Injury to fruit and forest trees from sulfur dioxide emissions;Berge;Gartenbauwissens-chaft,1959
4. Relationship between tree pests and emissions;Berge;Anz. Schädlingskunde Pflanzenschutz,1973
5. Interactions entre les pollutants atmosphériques et certains parasites des essences forestières (champignons et insectes);Boullard;La Forêt Privée,1973