1. Stereoisomeric analysis of beta-carotene;Bickoff;J. Assoc. Offic. Agr. Chemists,1949
2. Determination of beta-carotene stereoisomers in alfalfa;Bickoff;J. Assoc. Offic. Agr. Chemists,1949
3. Colour reactions attributed to vitamin A;Carr;Biochem. J.,1926
4. Carotene content of alfalfa: retention on dehydration and storage;Silker;Ind. Eng. Chem.,1944
5. Effect of heat blanching on alfalfa;Thompson;Agr. Engineering,1952