1. Khudolii, O.M. (2011).Teoretiko-metodichni zasadi sistemi pidgotovki iunikh gimnastiv 7-13 rokiv. Dokt. Diss. [Theoretical-methodic principles of system of junior, 7-13 yrs. age, gymnasts’ training Dokt. Diss.], Kiev; 2011 (in Ukrainian)
2. Khudolii, O., & Titarenco, A. (2013). The effectiveness of development programming strength in primary school children. Pedagogics, Psychology, Medical-Biological Problems of Physical Training and Sports, 17(7), 83–88. Retrieved from https://www.sportpedagogy.org.ua/index.php/PPS/article/view/517
3. Structural model of in-group dynamic of 6-10 years old boys’ motor fitness
4. Titarenko, A. A. (2010). Osoblivosti rozvitku ruhovih zdibnostey u divchatok molodshogo shkilnogo viku. Teorìâ Ta Metodika Fìzičnogo Vihovannâ, (9), 3-13. Retrieved from https://www.tmfv.com.ua/journal/article/view/652 (in Ukrainian)
5. Verkhoshanskyy, Yu.V. (1985). Prohrammyrovanye y orhanyzatsyya trenyrovochnoho protsessa [Programming and organization of the training process]. M.: Fyzkul’tura y sport, 176. (in Russian)