Sobol, E., Doroshenko, I., Svatyev, A., Doroshenko, E., Tsyganok, V., & Shamardin, V. (2024). Analysis of Factors of Sports Migration and the Effectiveness of Competitive Activity of Football Players. Journal of Learning Theory and Methodology, 5(1), 13–19. https://doi.org/10.17309/jltm.2024.5.1.02