Emeniru, D. C., J. Neminebor, J. Ikirigo, and F. Sogbara. “Perspective View on Sorption Thermodynamics: Basic Dye Uptake on Southern Nigerian Clay”. European Scientific Journal, ESJ, Vol. 13, no. 18, June 2017, p. 355, doi:10.19044/esj.2017.v13n18p355.