1. R. Abderhalden : Grundrisse der Allergie. B. Schwabe, Basel, 1950 , p.93 .
2. Correspondence
3. C. H. Blackley : Experimental Researches on the Causes and Nature of Catarrhus Aestivus . London, 1833 . Cit.Henriksen, E.: Asthma Bronchiale. Dansk Videnskabs Forlag, Copenhagen, 1833 , pp.9 , 9 .