Fakhar N. Memon, and Shahabuddin Memon, trans. “Calixarenes: A Versatile Source for the Recovery of Reactive Blue-19 Dye from Industrial Wastewater”. Pakistan Journal of Analytical & Environmental Chemistry 13, no. 2 (December 2, 2012): 148 – 158. Accessed April 20, 2026. https://pjaec.pk/index.php/pjaec/article/view/378.