1. Natural Flavouring Substances, Their Sources, and Added Artificial Flavouring Substances;Council of Europe,1974
2. Survey of flavoring ingredient usage levels;Flavoring Extract Manufacturers' Association;Fd Technol., Champaign,1965
3. The identification of contact allergens by human assay. III. The maximization test;Kligman;J. invest. Derm.,1966