@ARTICLE{Czopek_Kazimierz_Optimization_2001,
 author={Czopek, Kazimierz},
 number={No 2},
 journal={Archives of Mining Sciences},
 pages={189-198},
 howpublished={online},
 year={2001},
 publisher={Committee of Mining PAS},
 type={Article},
 title={Optimization of the modernization of the technological system in a mine by means application of a multiplicative function},
 URL={http://journals.pan.pl/Content/132247/PDF/8_MINING_46_2_2001_Czopek_OPTIMIZATION.pdf},
}