NEGRULESCU, Anamaria, et al. “DEVELOPMENT OF AN UPLC METHOD FOR SIMULTANEOUS DETERMINATION OF TARTRAZINE, CONGO RED AND METHYL ORANGE”. Studia Universitatis Babeș-Bolyai Chemia, vol. 60, no. 4, Dec. 2015, pp. 247-56, https://studia.reviste.ubbcluj.ro/index.php/chemia/article/view/8512.