TY JOUR TI MODERN CHARACTERISTICS OF DIGITAL PLATFORMS AND THEIR IMPACT ON TAX CONTROL KW digitalization of the economy KW digital platforms KW platform economy KW marketplace KW aggregator KW tax control KW tax administration KW digital footprint KW AIS "Tax-3" KW tax monitoring JO Russian Journal of Management AU GERBA, V.A. PY 2026 IS 14 PB Publishing Center RIOR