N. Pal Singh, P. Kumar, and J. Singh, “Synthesis, Spectral and Biological Studies on Novel Schiff Base Complexes of [Manganese(II), Copper(II), Nickel(II) and Cobalt(II)] Derived from 3-Chloro Benzohydrazide and Aldehyde Drivative”, ajc, vol. 24, no. 12, pp. 5719–5722, Aug. 2012.