ABDULLA, N. I.
 Gallium  Selective PVC Membrane Electrodes Based on Crown  Ethers.
<strong>Ibn AL- Haitham Journal For Pure and Applied Science</strong>, [S.l.], v. 19, n. 1, p. 91-103, nov. 2017.
ISSN 2521-3407.
Available at: &lt;<a href="http://jih.uobaghdad.edu.iq/index.php/j/article/view/1539" target="_new">http://jih.uobaghdad.edu.iq/index.php/j/article/view/1539</a>&gt;. Date accessed: 02 dec. 2019.