O. Khudolii, O. Ivashchenko, M. Cieślicka, and O. Rafikov, “Discriminant Analysis: the Influence of Exercise Modes on the Effectiveness of the Process of Learning to Throw A Small Ball for 9-Year-Old Boys ”, J. learn. theory methodol., vol. 5, no. 1, pp. 20–24, Apr. 2024.