L. Singh, A. K. Manglik, and N. P. Dhaka, “Synthesis and Physico-Chemical Studies of Some Penta-Coordinated Oxovanadium(IV) Complexes of N-Isonicotinamido-2-Hydroxy-1-Naphthalidimine”, ajc, vol. 9, no. 2, pp. 213–217, Jul. 2012.