@ARTICLE{Seyed_Saleh_Behbahani_Measuring_2013, author={Seyed Saleh Behbahani and Parviz Moarefvand and Kaveh Ahangari and Kamran Goshtasbi}, number={No 2}, journal={Archives of Mining Sciences}, howpublished={online}, year={2013}, publisher={Committee of Mining PAS}, title={Measuring Displacement and Contact Forces Among the Particles in Unloading of Slope by PFC2D (Particle Flow Code) / Pomiary przemieszczeń i sił kontaktu pomiędzy cząstkami materialnymi w trakcie wybierania wyrobiska pochyłego przy pomocy programu PFC2D}, URL={http://www.journals.pan.pl/Content/93166/PDF/10267-Volume58_Issue2-14_paper.pdf}, doi={10.2478/amsc-2013-0033}, }