Ágai, Béla, Károly Lempert, and Gyula Hornyák. 1982. “CONDENSED 1,3,5-TRIAZEPINES - V THE SYNTHESIS OF PYRAZOLO [1,5-A] [1,3,5]-BENZOTRIAZEPINES ”. Periodica Polytechnica Chemical Engineering 26 (3-4):221-28.