TY JOUR TI Problems of applying the principle of due diligence in the implementation of tax control in order to ensure the economic security of the enterprise KW the principle of due diligence KW tax control KW economic security KW information systems KW VAT KW reliability of tax accounting KW reliability of accounting JO Russian Journal of Management AU Khmelev, S.A. PY 2021 IS 8 PB Publishing Center RIOR