TY - JOUR L1 - http://journals.pan.pl/Content/93083/PDF/10267-Volume58_Issue1-12_paper.pdf.pdf L2 - http://journals.pan.pl/Content/93083 PY - 2013 IS - No 1 DO - 10.2478/amsc-2013-0012 A1 - Hossein Ali Lazemi A1 - Mohammad Fatehi Marji A1 - Ali Reza Yarahmadi Bafghi A1 - Kamran Goshtasbi PB - Committee of Mining PAS DA - 2013 T1 - Rock Failure Analysis of the Broken Zone Around a Circular Opening / Analiza pęknięcia skały w strefie naruszonej wokół otworu kolistego UR - http://journals.pan.pl/dlibra/publication/edition/93083 T2 - Archives of Mining Sciences ER -