1. Bergoff, H. M. &Delwiche, C. C., 1951. The formation of choline and betaïne in leaf disks ofBeta vulgaris.J. biol. Chem., 217, 2,819?828.
2. Bidwell, G. L. &Wooton, E. A., 1925. Saltbushes and their allies in the United States.U.S. Dept. Agr. Dept. Bull. 1345, 39 p. ill.
3. Bouquet, J., 1939. Notes sur l'alimentation dans le Sud Tunisien.Arch. Inst. Pasteur Tunis, XXIX,350?355.
4. Bunge, Al., 1880. Pflanzengeographische Betrachtungen über die Familie der Chenopodiaceen.Mém. Acad. Imp. Sc. Saint-Petersbourg, 7e série, XXVII, no 8.
5. Carter, W., 1930. Ecological Studies of the Beet Leaf Hopper.U.S. Dept. Agr. Techn. Bull. 206, 114 p., ill.