Ivashchenko, O., Y. Nosko, P. Bartik, and O. Makanin. “Gender-Related Peculiarities of 7-Year-Old Schoolchildren’s Motor Fitness”. Teorìâ Ta Metodika Fìzičnogo Vihovannâ, Vol. 20, no. 4, Dec. 2020, pp. 228-33, doi:https://doi.org/10.17309/tmfv.2020.4.05.