@ARTICLE{
author={Radnovic Branislav,Maric Radenko M,Radnovic Vladana,Ilic Milena P,Lukac Dragan},
year={2015},
title={Marketing Research on Passenger Satisfaction with Public Transport Service in the City of Belgrade},
journal={PROMET-TRAFFIC & TRANSPORTATION},
volume={27},
number={1},
pages={47-57},
document_type={Article},
} 

@ARTICLE{
author={Zelenovic Vera,Lukac Dragan,Davidovic Milivoje},
year={2011},
title={Market research - base of business decision making (company examples from Serbia)},
journal={AFRICAN JOURNAL OF BUSINESS MANAGEMENT},
volume={5},
number={11},
pages={4549-4560},
document_type={Article},
}