@ARTICLE{Snopkowski_Ryszard_Boundary_2000,
 author={Snopkowski, Ryszard},
 number={No 4},
 journal={Archives of Mining Sciences},
 pages={501-510},
 howpublished={online},
 year={2000},
 publisher={Committee of Mining PAS},
 type={Article},
 title={Boundary Conditions for Elementary Functions of Probability Densities for the Production Process Realised in Longwalls},
 URL={http://czasopisma.pan.pl/Content/132303/PDF-MASTER/6_1_MINING_45_4_2000_Snopkowski_Boundary.pdf},
}