RESURRECCION, Joanna Z.; 						RESURRECCION, Augustus C..
 An Opportunity Cost-Based Modified Genetic Algorithm for the P − k Median Problem.
<strong>Philippine Engineering Journal</strong>, [S.l.], v. 25, n. 1, aug. 2011.
ISSN 2718-9287.
Available at: &lt;<a href="https://journals.upd.edu.ph/index.php/pej/article/view/2359" target="_new">https://journals.upd.edu.ph/index.php/pej/article/view/2359</a>&gt;. Date accessed: 01 sep. 2025.