“‘SYNTHESIS AND CHARACTERIZATION OF Ni(II), Cu(II), Zn(II), Cd(II), and Hg(II) COMPLEXES WITH A NOVEL SCHIFF BASE LIGAND: 4-Hydroxy-3-(1-((5-(p-Tolyl)- 1,3,4-Oxadiazol-2-yl)imino)ethyl)-2H-Chromen-2-One’”. International Journal of Food and Nutritional Sciences, vol. 11, no. 10, Jan. 2022, pp. 6804-15, https://www.ijfans.org/index.php/Journal/article/view/11443.