TY JOUR TI The legal standard of integrity of a taxable person KW good faith in tax law KW unjustified tax benefit KW Article 54.1 of the Tax Code of the Russian Federation KW tax reconstruction KW test of the main purpose KW due diligence KW objective imputation JO Journal of Legal Studies AU Nepomnyaschiy, P.A. PY 2026 IS 11 PB INFRA-M Academic Publishing LLC.