I. Odeh, I. A. Shqair, Z. M. Shakhshir, J. Masharqah, and W. J Jondi, “Spectrophotometric Determination of Cu2+ Metal Ions via Complex Formation with Carboxylated Tris(2-aminoethyl)amine”, JAC, vol. 12, no. 3, pp. 4237–4246, Feb. 2016.