Imam Bakhsh Solangi, Ashfaque Ali Bhatti, Mansoor Ahmed Qazi, Shahabuddin Memon, and M. I. Bhanger, trans. “Selective Cation Recognition by P-Tetranitrocalix[4]arene”. Pakistan Journal of Analytical & Environmental Chemistry 13, no. 2 (December 2, 2012): 129 – 136. Accessed November 5, 2025. https://pjaec.pk/index.php/pjaec/article/view/375.