Leites N. S. :
The problem of correlation of the developmental and of the individual in abilities of schoolchildren
85'1 p.9
Marantsman V. G. :
Age and individual differences in perception of literary texts by schoolchildren.
85'5 p.54
Meshkova T. A. :
Inter-individual differences in tempo characteristics in 7-8-years aid children
94'1 p.136
D'yachenko O. M. :
Intellectual differences in child's development
97'4 p.138