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“Synthesis & Characterization of Oxazinan and 5-oxa-7-aza-spiro[2,5] octane from reaction of Dibenzylidene with malonic anhydride and 5-oxa-spiro[2,3] hexane-4,6-dione”., Baghdad Sci.J, vol. 4, no. 2, pp. 276–284, Jun. 2007, doi: 10.21123/bsj.2007.4.2.276-284.