J. Li, “Synthesis and Crystal Structure of Aminium 2-(Carbonyl)-3,4,5,6-tetrabromobenzoate 3,4,5,6-Tetrabromobenzene-1,2-dioic Acid Propanone Monosolvate”, ajc, vol. 25, no. 2, pp. 1157–1158, Sep. 2012.