Kumar, Birendra, et al. “Synthesis and Antimicrobial Activities of Complexes of Cu(II) and Ni(II)-Pyridine-2-Aldoxime &Amp; Alkaline Earth Metal Salts”. Asian Journal of Chemistry, vol. 23, no. 4, Dec. 2010, pp. 1680-2, https://asianpubs.org/index.php/ajchem/article/view/10183.