Verdizadeh, N. A., 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”. IJRDO-Journal of Applied Science, Vol. 3, no. 5, May 2017, pp. 66-76, doi:10.53555/as.v3i5.1288.