1. , , ‘Advanced Organic Chemistry’, 5th edn., John Wiley & Sons, New York, 2001, p. 73;
2. The composition, structure and hydrogen bonding of the β-diketones
3. , ‘Physical Organic Chemistry’, McGraw-Hill, New York, 1962, p. 243.
4. , , in ‘The Chemistry of the Carbonyl Group’, Ed. J. Zabicky, Wiley-Interscience, London, 1970, Chapt. 3.
5. , in ‘Modern Synthetic Reactions’, 2nd edn., Benjamin, Menlo Park, CA, 1972, Chapt. 9.