%0 Journal Article %T Promising directions for formalising shadow activity in the context of the digitalisation of economic relations %A Yarkina, N.N. %K shadow economy, tax administration, big data, artificial intelligence, tax control %J Economic policy and national security %D 2025 %N 0 %P 13 %I SAINT-PETERSBURG UNIVERSITY OF THE MINISTRY OF INTERNAL AFFAIRS OF THE RUSSIAN FEDERATION