Dobrowolska, Julia, et al. “NEUROPLASTICITY AND COGNITIVE ENHANCEMENT THROUGH MENTAL ARITHMETIC: A SYSTEMATIC REVIEW OF ABACUS-BASED TRAINING IN CHILDREN”. International Journal of Innovative Technologies in Social Science, vol. 2, no. 2(50), June 2026, https://doi.org/10.31435/ijitss.2(50).2026.5725.