Vijayan, V., S. Yesodharan, and E. P. Yesodharan. “Solar Photocatalysis Mediated by ZnO for the Removal of Last Traces of Indigo Carmine Dye Pollutant from Water”. International Journal of Science and Engineering Invention, Mar. 2018, p. 441 to 463, doi:10.23958/ijsei/vol04-i02/02.