Danylenko , H. ., G. . Cherniakova, T. . Merkulova, and O. . Avdiievska. “The Impact of Summer Holidays on the Physical Development of School-Age Children”. Medicni Perspektivi, vol. 26, no. 2, June 2021, pp. 147-52, doi:10.26641/2307-0404.2021.2.234661.