Ivashchenko, O. V., Nosko, M. O., Cieślicka, M. and Malyshev, D. A. (2019) “Motor Abilities: Peculiarities of Strength Effort Assessment in Boys Aged 11–13”, Physical Education Theory and Methodology, 19(1), pp. 37–43. doi: 10.17309/tmfv.2019.1.05.