1. Robinson and Robinson, Biochem. J., 26, 1650 (1932).
2. Robinson, Ber. dtsch. chem. Ges., 67, 98 (1934).
3. Robertson and Robinson, J. Chem. Soc., 1460 (1928). Murakami, Robertson and Robinson, ibid., 2665 (1931). Grove and Robinson, ibid., 2722 (1931). Nair and Robinson, ibid., 1611 (1934).
4. Bate-Smith and Westall, Biochim. Biophys. Acta., 4, 427 (1950).
5. Sondheimer and Kertesz, J. Amer. Chem. Soc., 70, 3476 (1948).