Lasek, S, Matwiejszyn, A & Ptak, M 2005, 'Borehole Deformation Preceding Induced Seismic Events—Examples from Coal Mines in Upper Silesian Coal Basin in Poland', 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. 485-491, https://doi.org/10.36487/ACG_repo/574_51
(https://papers.acg.uwa.edu.au/p/574_51_Lasek/)