TY JOUR TI World economy at the stage of modern history: increasing turbulence KW gross domestic product KW GDP KW GDP output dynamics KW USA KW China KW European Union (EU) KW Russia (RF) KW World Bank KW IMF KW OECD KW historical-economic KW comparative and statistical methods of scientific analysis JO AU Kovaleva, V.A. AU Kotlyar, N.P. PY 2021 IS 6 PB INFRA-M Academic Publishing LLC.