%0 Journal Article %T Synthesis of New Derivatives of Pyridazino[6,1-c]Pyrimido[5,4-e][1,2,4]Triazine; a Novel Heterocyclic System %A Akaberi, Toktam %A Shiri, Ali %A Sheikhi-Mohammareh, Seddigheh %J Journal of Chemical Research %@ 1747-5198 %D 2016