@ARTICLE{Krata_Przemysław_Implementation_2010,
 author={Krata, Przemysław},
 number={No 1},
 journal={Archives of Transport},
 howpublished={online},
 year={2010},
 publisher={Polish Academy of Sciences Committee of Transport Design},
 title={Implementation of Gravity Model to Estimation of Transportation Market Shares},
 URL={http://journals.pan.pl/Content/94832/mainfile.pdf},
}