Z.-P. Liang and J. Li, “Synthesis and Structural Characterization of N-2,3-Dimethyl-5-oxo-1-phenyl-1H-pyrazol-4-yl-7-oxa-bicyclo[2,2,1]hept-5-ene-2,3-dicarboximide”, ajc, vol. 25, no. 2, pp. 685–687, Sep. 2012.