N. A. Verdizadeh, A. Z. Zalov, U. B. Abaskuliyeva, N. N. Ephendiyeva, and N. C. Hasanova, “Liquid-Liquid Extraction and Spectrophotometric Determination of Cromium (VI) with o-Hydroxythiophenols In The Presence of Hydrophobic Amines”, as, vol. 3, no. 5, pp. 66-76, May 2017.