@ARTICLE{
author={Mestrovic Romeo,Dragovic Branislav M,Zrnic Nenad Dj,Skuric Maja},
year={2013},
title={A Multi-Server Queuing Model Study of Specific Cost Ratio in a Port},
journal={TEHNICKI VJESNIK-TECHNICAL GAZETTE},
volume={20},
number={5},
pages={781-786},
document_type={Article},
} 

@ARTICLE{
author={Dragovic Branislav M,Park Nam-Kyu,Zrnic Nenad Dj,Mestrovic Romeo},
year={2012},
title={Mathematical Models of Multiserver Queuing System for Dynamic Performance Evaluation in Port},
journal={MATHEMATICAL PROBLEMS IN ENGINEERING},
volume={},
number={},
pages={-},
document_type={Article},
}