ABATE, Y.; 						ARCIAGA, M.; 						RAMOS, H..
 Density Measurements of Negative Hydrogen Ions Using Mass Spectrometer.
<strong>Science Diliman: A Journal of Pure and Applied Sciences</strong>, [S.l.], v. 13, n. 2, july 2012.
ISSN 2012-0818.
Available at: &lt;<a href="https://www.journals.upd.edu.ph/index.php/sciencediliman/article/view/179" target="_new">https://www.journals.upd.edu.ph/index.php/sciencediliman/article/view/179</a>&gt;. Date accessed: 28 sep. 2025.