Borowska-Stefanska, M., & 		Wisniewski, S.
(2017).
 Vehicle routing problem as urban public transport optimization tool.
<em>Computer Assisted Methods In Engineering And Science, 23</em>(4), 213–229.
Retrieved from <a href="https://cames.ippt.pan.pl/index.php/cames/article/view/184" target="_new">https://cames.ippt.pan.pl/index.php/cames/article/view/184</a>