V. Sahu, “Synthesis and characterization of 3-aryl[1,2,3,5]tetrazino[5,4-a]benzimidazole-4(3H)-thione derivatives”, VRI-BMC, vol. 1, no. 2, pp. pp.63–68, Oct. 2013, doi: 10.14259/bmc.v1i2.74.