Volkov I. P. : A text-book on psychohygienic education of children and adolescents (in Russian) 83'2 p.158
Volkov I. P. :
Psychological preparation of sportsmen (in Russian)
87'1 p.178
Volkov I. P. :
Present-day issues in the psychology of physical training
88'1 p.115
Volkov I. P. , Stambulova N. Â. , Khanin Yu. L. :
A textbook on the psychology of physical training (in Russian)
88'6 p.150