Anila, B.N., et al. “Synthesis, Characterization, Molecular Modeling, Antimicrobial and DNA Binding Studies of Cobalt(II) Complexes of 2,3-(Diimino-4’-antipyrinyl)butane With Varying Counter Ions”. Asian Journal of Chemistry, vol. 29, no. 3, Dec. 2016, pp. 691-02, doi:10.14233/ajchem.2017.20344.