Prasad, Surendra, Agarwal, Ram Kumar, Raj Modi, Hans. “Synthesis, spectral, thermal and biological properties of some novel coordination compounds of VO(IV) and biological 4[N-(4′-ethylbenzalidene) amino] antipyrine thiosemicarbazone and 4[N-(2′, 4′-dimethyl benzalidene amino] antipyrine thiosemicarbazone.” Journal of the Iranian Chemical Research, vol. 2, no. 3, 2009, pp. 173-182.