1. 1) J.E.O.Mayne : Research, 6,278 (1952); Official Digest, 24. 127 (1952)
2. 5) J. E. O. Mayne : J. Oil Colour Chem. Assoc., 40,183 (1957)
3. 6) B. W. Cherry, J. E. O. Mayne : Ofhcial Digest, 23. 469 (1961)
4. 7) C. C. Maitland, J. E. O. Mayne : ibid., 34,972 (1962)
5. 8) B. W. Cherry, J. E. O. Mayne : ibid., 37, 13 (1965)