Lurka, A 2005, 'Location of Mining Induced Seismicity in Zones of High P-Wave Velocity and in Zones of High P-Wave Velocity Gradient in Polish Mines', in Y Potvin & M Hudyma (eds), RaSiM6: Proceedings of the Sixth International Symposium on Rockburst and Seismicity in Mines Proceedings, Australian Centre for Geomechanics, Perth, pp. 479-483, https://doi.org/10.36487/ACG_repo/574_50
(https://papers.acg.uwa.edu.au/p/574_50_Lurka/)