Shaikh, Julekha A. “Synthesis, Characterization, X-Ray Diffraction Studies and Biological Properties of Ni(II) and Pd(II) Complexes of Tetradentate Schiff Bases”. Asian Journal of Chemistry, vol. 30, no. 6, May 2018, pp. 1393-6, doi:10.14233/ajchem.2018.21299.