1. Brown, D.J., The Pyrimidines, New York: Interscience, 1962.
2. Brown, D.J., The Pyrimidines. Supplement I, New York: Interscience, 1970.
3. Brown, D.J., The Pyrimidines. Supplement II, New York: Interscience, 1985.
4. Nishiwaki, T., Bull. Chem. Soc. Jpn., 1970, vol. 43, p. 937.
5. Kreutzberger, A. and Leyke-Rohing, S., J. Fluorine Chem., 1979, vol. 14, p. 55.