1. in Pyridine and its Derivatives, edited by Part III, Chap. XII, p. 619. Interscience, New York, London (1962).
2. and paper presented at the Annual Convention of Chemists, Kashmir, November 1982.
3. Spectroscopic investigations of phase transition in 5-chloro-2-pyridone
4. (Ed.), The Sadtler Handbook of Proton NMR Spectra. Sadtler/Heyden, London (1978).