REYES, Valentin A..
 Research Brief: R&D Imperatives in Manufacturing.
<strong>Philippine Engineering Journal</strong>, [S.l.], v. 15, n. 1, sep. 2021.
ISSN 2718-9287.
Available at: &lt;<a href="https://www.journals.upd.edu.ph/index.php/pej/article/view/8076" target="_new">https://www.journals.upd.edu.ph/index.php/pej/article/view/8076</a>&gt;. Date accessed: 26 sep. 2025.