@ARTICLE{Prusek_Stanisław_Changes_2015, author={Prusek, Stanisław}, number={No 2}, journal={Archives of Mining Sciences}, howpublished={online}, year={2015}, publisher={Committee of Mining PAS}, title={Changes In Cross-Sectional Area Of Gateroads In Longwalls With Roof Caving, Ventilated With “U” And “Y” Systems}, URL={http://journals.pan.pl/Content/93892/PDF/10267-Volume60_Issue2-08_paper.pdf}, doi={10.1515/amsc-2015-0036}, }