Demirhan, B., D. Abdırahmanova, K. Canuzakov, and S. Geri. “Evaluation of Some Respiratory Functions of Kyrgyz National Team Athletes before 2016 Summer Olympic Games”. Journal of Human Sciences, vol. 15, no. 3, Aug. 2018, pp. 1711-6, https://j-humansciences.com/ojs/index.php/IJHS/article/view/5431.