A. PAWANOJI and B. MEHTA, “Synthesis, Characterization and X-Ray Diffraction Studies of Co(II), Ni(II) and Pd(II) Complexes of Schiff Base Derived from 3-Hydroxy benzaldehyde and 3-Hydroxy-2-naphthoic hydrazide”, ajc, vol. 21, no. 9, pp. 6869–6876, Mar. 2010.