TY JOUR TI Problems of increasing the profitability of Russian commercial banks KW bank KW profitability KW commercial bank KW banking activity KW profit JO The Economy under Guard AU Bobryshev, A.N. AU Shamrina, S.Y. AU Frolov, A.V. PY 2020 IS 2020 PB Nizhny Novgorod Academy of the Ministry of the Interior of Russia