Elsheikh, Ragaa, Ayman A. Gouda, Hassan A. Elsayed, and Enas M. Alamin. 2015. “CLOUD POINT EXTRACTION, PRECONCENRATION AND SPECTROPHOTOMETRIC DETERMINATION OF COBALT IN WATER SAMPLES”. International Journal of Pharmacy and Pharmaceutical Sciences 7 (9):213-21. https://journals.innovareacademics.in/index.php/ijpps/article/view/7235.