Antakli, Saad, et al. “SIMULTANEOUS DETERMINATION OF TARTRAZINE AND BRILLIANT BLUE IN FOODSTUFFS BY SPECTROPHOTOMETRIC METHOD”. International Journal of Pharmacy and Pharmaceutical Sciences, vol. 7, no. 6, June 2015, pp. 214-8, https://www.journals.innovareacademics.in/index.php/ijpps/article/view/4235.