TY JOUR TI Ranking of the Largest groups and Companies in the Field of Outsourcing of Accounting Functions: Results of 2020 KW outsourcing KW outsourcing of accounting functions KW participants KW revenue of participants KW accounting and tax accounting KW payroll accounting KW personnel accounting JO Auditor AU Khanferyan, V.V. PY 2021 IS 7 PB INFRA-M Academic Publishing LLC.