TY  - JOUR
AU  - V. V. Tikhomirov
TI  - On the choice of the length of approximation interval in the estimation of a derivative in control problems
JO  - Vestnik Moskovskogo universiteta. Matematika, mehanika
PY  - 1984
SP  - 45
EP  - 48
IS  - 1
UR  - http://geodesic.mathdoc.fr/item/VMUMM_1984_1_a9/
LA  - ru
ID  - VMUMM_1984_1_a9
ER  -