References
- Duchaine J. Allergy of the upper respiratory tract. International Textbook of Allergy, J. M. Jammar. Ejnar Munksgaard Ltd., Copenhagen 1959; 154–195
- Sangiorgi P. Observation of pollinosis in Lombardia in the last three years, Part II. Bronchial Asthma. Charles C Thomas, Springfield, Illinois 1945; 601, cited by L. Unger
- Preliminary report of the National Pollen Survey Committee of the American Academy of Allergy on proposed standardization of pollen counting techniques. J. Allergy 1946; 17: 178–180