1. The chemistry and standardization of allergens;Dreborg,1986
2. RAST based allergen assay methods;Yman;Dev Biol Stand,1975
3. International units;Norman,1987
4. Potency units for allergenic extracts in the USA;Baer,1987
5. Biological standardization based on quantitative skin testing: the ID 50 EAL method (intradermal dilution for 50 mm sum of erythema diameters determines standardization of allergenic extracts);Turkeltaub,1987