I.P. ZAITSEVA. The influence of functional states on the normative indicators of cross-country running of students before and after the COVID-19 pandemic. Theory and Practice of Physical Culture, [S. l.], n. 4, p. 57–59, 2023. Disponível em: http://tpfk.ru/index.php/TPPC/article/view/576. Acesso em: 4 may. 2024.