@ARTICLE{Trunina_Irina_Ensuring_2013,
 author={Trunina, Irina},
 number={No 3},
 journal={Teka Commission of Motorization and Power Industry in Agriculture},
 howpublished={online},
 year={2013},
 publisher={The Lublin Branch of the Polish Academy of Sciences},
 title={Ensuring the competitiveness of the enterprise on external market},
}