%0 Journal Article %T Synthesis of novel heterocyclic systems: [1,2,4] triazino [4,5-b] [1,2,4,5] tetrazines %A M. M. Heravi %A Rahimizadeh, Mohammad %A -, - %A M. Ghassemzadeh %J Indian Journal of Heterocyclic Chemistry %@ 0971-1627 %D 2006