Dotsenko T, Shaparenko S, Humenna Y. INTERRELATIONSHIPS OF CASHLESS ECONOMY, SERVICES OF TELECOMMUNICATION COMPANIES AND INDICATORS OF THE SHADOW ECONOMY: MODERN MODELING TECHNIQUES. SER [Internet]. 2023 Jun. 30 [cited 2026 Aug. 1];2(48):12-24. Available from: https://www.fta-support.website/index.php/SER/article/view/489