Gallium Selective PVC Membrane Electrodes Based on Crown Ethers. Ibn AL-Haitham Journal For Pure and Applied Sciences, [S. l.], v. 19, n. 1, p. 91–103, 2017. Disponível em: https://jih.uobaghdad.edu.iq/index.php/j/article/view/1539.. Acesso em: 16 jul. 2024.