Malovichko, DA 2005, 'Study of “Low-Frequency” Seismic Events Sources in the Mines of the Verkhnekamskoye Potash Deposit', 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. 373-377, https://doi.org/10.36487/ACG_repo/574_37
(https://papers.acg.uwa.edu.au/p/574_37_Malovichko/)