D. Max Roundhill, Imam Bakhsh Solangi, Shahabuddin Memon, M. I. Bhanger, and Mustafa Yilmaz, trans. “The Liquid-Liquid Extraction of Toxic Metals (Cd, Hg and Pb) by Calixarenes”. Pakistan Journal of Analytical & Environmental Chemistry 10, no. 1 & 2 (December 1, 2009): 1–13. Accessed April 20, 2026. https://pjaec.pk/index.php/pjaec/article/view/436.