TSAGELNIKOVA , A. A.; BOYARINA , Yu. S.; TSIGANOV , O. V. THE STUDY OF MENTAL STATES TENNIS PLAYERS OF VARYING QUALIFICATIONS DURING THE COMPETITION. Modern Psychology, [S. l.], v. 2, n. 3 (5), p. 227–232, 2019. DOI: 10.46991/SBMP/2019.2.2(5).227. Disponível em: https://journals.ysu.am/index.php/modern-psychology/article/view/Vol.2_No.2%285%29_2019_pp.227-232. Acesso em: 22 jul. 2024.