Vujošević, M.
(2016).
 A bicriterion Steiner tree problem on graph.
<em>Yugoslav Journal Of Operations Research, 13</em>(1).
Retrieved from <a href="https://yujor.fon.bg.ac.rs/index.php/yujor/article/view/198" target="_new">https://yujor.fon.bg.ac.rs/index.php/yujor/article/view/198</a>