L. MITU, A. KRIZA, and M. DIANU, “Synthesis and Characterization of Cu(II), Ni(II), Co(II), Mn(II), Zn(II), Cd(II) Complexes of Isonicotinoylhydrazone-1-methyl-2-aldehydepyrrole”, ajc, vol. 19, no. 7, pp. 5666–5674, Mar. 2010.