NEKOUEI, Shahram, and Farzin NEKOUEI. “CLOUD POINT EXTRACTION AND SPECTRO¬PHOTOMETRIC DETERMINATION OF As(III) USING BRILLIANT BLACK BN AS AN EXTRACTION AGENT IN WATER SAMPLES”. Studia Universitatis Babeș-Bolyai Chemia, vol. 60, no. 2, June 2015, pp. 343-5, https://studia.reviste.ubbcluj.ro/index.php/chemia/article/view/8455.