Ghanim Al – OlawiA. H. S. and D. Y. Fanfoon Al-Rammahi, “Removal Color Study of Azo dye (4-4/-antipyriyl azo 4-Amino Phenol) from Aqueous Solution by using Photo – Fenton Oxidation”, QJPS, vol. 23, no. 1, pp. 24 - 33, May 2018.