Selective Cation Recognition by p-Tetranitrocalix[4]arene. Pakistan Journal of Analytical & Environmental Chemistry, Pakistan, v. 13, n. 2, p. 129 – 136, 2012. DOI: 10.21743/. Disponível em: http://pjaec.pk/index.php/pjaec/article/view/375. Acesso em: 12 jul. 2025.