Arfeen, I.
(2018).
 Electronic Circuit Design for Hydrogen Ion Measurement System.
<em>Gezira Journal Of Engineering And Applied Sciences, 7</em>(2).
Retrieved from <a href="http://37.60.236.48/index.php/gjeas/article/view/554" target="_new">http://37.60.236.48/index.php/gjeas/article/view/554</a>