Hafez, E. A. A., E. M. Zayed, and J. K.U. Sadek, "Recent Development in the Chemistry of Arylazoazolones (Review).", Chemistry, vol. 22, pp. 241, 1985.
Zayed, E. M., E. A. A. Hafez, and S. A. S. Ghozlan, "Synthesis of some new N-Substituted N-Aminopyridine derivatives", Pharmazie, vol. 40, pp. 10, 1985.