Villoria Jr., O.
(2021).
 Research Brief:  I.E./O.R. Research and Development Opportunities in Distribution and Transportation.
<em>Philippine Engineering Journal, 15</em>(1).
Retrieved from <a href="https://www.journals.upd.edu.ph/index.php/pej/article/view/8080" target="_new">https://www.journals.upd.edu.ph/index.php/pej/article/view/8080</a>