Irawan, C., & 		Soemadi, K.
(2018).
 The capacitated p-centre problem with the presence of fixed cost and multilevel capacities.
<em>Yugoslav Journal Of Operations Research, 28</em>(4), 453-473.
Retrieved from <a href="https://yujor.fon.bg.ac.rs/index.php/yujor/article/view/606" target="_new">https://yujor.fon.bg.ac.rs/index.php/yujor/article/view/606</a>