TY  - JOUR
AU  - V. G. Durnev
TI  - Generalization of problem 9.25 from ``the Kourovka notebook''
JO  - Matematičeskie zametki
PY  - 1990
SP  - 15
EP  - 19
VL  - 47
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_1990_47_2_a2/
LA  - ru
ID  - MZM_1990_47_2_a2
ER  -