Синиця, Тетяна, and Людмила Шестерова. 2017. “Study of the Relevance Recreative Aerobics Exercises for Women of the First Mature Age”. Slobozhanskyi Herald of Science and Sport, no. 6(62) (December):97-101. https://doi.org/10.15391/snsv.2017-6.019.