Maitham Y. Hussain:Bassam A. Hassan : Zaman K .Hanan. Synthesis and Characterization of a New Schiff basses(3Z,3Z)-3,3’ -(oxybis(4,1- phenylene) bis(azanylylidene) bis(indolin-2-One). TURCOMAT 2021, 12, 3341-3351.