@ARTICLE{Czopek_Kazimierz_Selection_2002,
 author={Czopek, Kazimierz},
 number={No 2},
 journal={Archives of Mining Sciences},
 pages={275-287},
 howpublished={online},
 year={2002},
 publisher={Committee of Mining PAS},
 type={Article},
 title={Selection criteria of the function of exploitation costs},
 URL={http://journals.pan.pl/Content/132186/PDF-MASTER/10_MINING_47_2_2002_Czopek_SELECTION.pdf},
}