ANALYSIS OF AFTERSHOCK SEISMICITY (М ≥ 4.0) OF THE VAN EARTHQUAKE OF 23.10.2011 (M = 7.2) FOR THE PERIOD 23.10.2011– 30.11.2012. Proc. YSU C: Geol. Geogr. Sci. 2021, 55 (2 (255), 96-103. https://doi.org/10.46991/PYSU:C/2021.55.2.096.