J. Rajendran, C. Jothilakshmi, and P. Agastian, “Synthesis, Characterization and Bioactivity of Cobalt(II)Complexes with Benzoylidenepyridine-2-, 3- and4-hydroxyaniline and Nitrate or Perchlorate as Coligands”, ajc, vol. 18, no. 2, pp. 907–916, Mar. 2010.