Synthesis and cytotoxicity evaluation of substituted pyridazino[4,5-b]phenazine-5,12-diones and tri/tetra-azabenzofluorene-5,6-dionesHyun‐Jung Lee, Hea-Young Park Choo, Myung‐Eun Suh et al.|European Journal of Medicinal Chemistry|2006Cited by 25