Chowdhury, B., S. S. Pradhan, H. S. Das, and B. Biswas. “Visible Light Induced Photocatalytic Dye Degradation by Cobalt Oxide Nanoparticles”. Fine Chemical Engineering, vol. 1, no. 2, Sept. 2020, pp. 128-42, doi:10.37256/fce.122020559.