1. and in Thiazole and Its Derivatives, edited by Vol. 34, Part 2, p. 17. Wiley, New York (1978).
2. and The Tautomerism of Heterocycles, Suppl. 1, p. 427. Academic Press, New York (1976).
3. and J. Chem. Soc., Perkin Trans. 2 535 (1982).
4. and J. Chem. Soc., Perkin Trans. 2 1156 (1980).
5. Thiazole and thiazolium ion proton magnetic-resonance spectra