@ARTICLE{Napieraj_Aneta_Method_2016, author={Napieraj, Aneta and Snopkowski, Ryszard and Sukiennik, Marta}, number={No 4}, journal={Archives of Mining Sciences}, howpublished={online}, year={2016}, publisher={Committee of Mining PAS}, title={Method of the Assessment of the Influence of Longwall Effective Working Time Onto Obtained Mining Output}, URL={http://journals.pan.pl/Content/105550/PDF/10267-Volume61_Issue4-16_paper.pdf}, doi={10.1515/amsc-2016-0064}, }