Dotsenko, Tetiana, Serhii Shaparenko, and Yuliia Humenna. “INTERRELATIONSHIPS OF CASHLESS ECONOMY, SERVICES OF TELECOMMUNICATION COMPANIES AND INDICATORS OF THE SHADOW ECONOMY: MODERN MODELING TECHNIQUES”. Socio-economic relations in the digital society 2, no. 48 (June 30, 2023): 12–24. Accessed August 1, 2026. https://fta-support.website/index.php/SER/article/view/489.