TY CONF TI Analysis of the dependence of the ruble exchange rate volatility on the oil market in a pandemic KW : world economic system KW Russia KW external shocks KW volatility KW ruble exchange rate KW conjuncture KW oil market KW pandemic KW coronavirus JO International Conference "Computing for Physics and Technology - CPT2020" AU Zolotarev, O.V. AU Khakimova, A.K. AU Berberova, M.A. AU Zolotareva, V.. PY 2025 PB ANO "Scientific and Research Center for Information in Physics and Technique"