TY - JOUR L1 - http://journals.pan.pl/Content/105603/PDF/10267-Volume62_Issue4-02_paper.pdf L2 - http://journals.pan.pl/Content/105603 PY - 2017 IS - No 4 DO - 10.1515/amsc-2017-0049 A1 - Jaszczuk, Marek A1 - Pawlikowski, Arkadiusz PB - Committee of Mining PAS DA - 2017 T1 - A Model of Equilibrium Conditions of Roof Rock Mass Giving Consideration to the Yielding Capacity of Powered Supports UR - http://journals.pan.pl/dlibra/publication/edition/105603 T2 - Archives of Mining Sciences ER -