Firsin, S. Social, psychological and pedagogical aspects of education and organization leisure children and youth [Электронный ресурс] / Firsin Sergey // Modern university sport science : 8 International Scientific and Practical Conference of Students and Young Scientists, May 27 - 28, 2014 / Ministry of sport of Russian Federation, Russian State University of Physical Education, Sport, Youth and Tourism. - Moscow, 2014. - С. 39-? - Текст: англ. - Библиогр.: с. ? (? назв.).