TY JOUR TI Other Expenses and Reporting Transparency: How Analytics and Law Limit Tax Arbitrage KW tax accounting KW other expenses KW corporate income tax KW judicial practice KW economic justification KW business purpose KW documentary evidence KW Tax Code of the Russian Federation KW comparative legal analysis KW tax disputes. JO JOURNAL OF MONETARY ECONOMICS AND MANAGEMENT AU Kiryushenkova, P.A. PY 2026 IS 0 PB ITBO University