TY JOUR TI Ranking of the Most Important Groups and Companies in the Field of Outsourcing of Accounting Functions: Results of 2021 KW outsourcing KW outsourcing of accounting functions KW ranking participants KW revenue of participants KW accounting and tax accounting KW payroll KW personnel records KW reporting in accordance with RAS KW reporting in accordance with IFRS JO Auditor AU Khanferyan, V.V. PY 2022 IS 8 PB INFRA-M Academic Publishing LLC.