TY  - JOUR
AU  - A. I. Zvyagintsev
TI  - Extremal problem of the norm of an intermediate derivative
JO  - Matematičeskie zametki
PY  - 1991
SP  - 45
EP  - 54
VL  - 49
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_1991_49_2_a5/
LA  - ru
ID  - MZM_1991_49_2_a5
ER  -