Artamonova E. R. :
The problem of schoolchildren's knowledge mastering in P. P. Blonsky's scientific inheritance
91'4 p.112
Stepanova M. A. :
The problem of education and development in the works of L. S. Vygotsky and P. Ya. Galperin
01'4 p.106
Arievitch I. M. :
P. Ya. Galperin's contribution to the activity theory: An integrated approach to instruction and development
02'5 p.50