TY  - JOUR
AU  - N. A. Izobov
TI  - Cases of sharpening and the attainability of an estimate of the highest exponent in the method of freezing
JO  - Differencialʹnye uravneniâ
PY  - 1971
SP  - 1179
EP  - 1191
VL  - 7
IS  - 7
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1971_7_7_a3/
LA  - ru
ID  - DE_1971_7_7_a3
ER  -