TY  - JOUR
AU  - B. V. Aleshin
AU  - P. I. Kuznetsov
TI  - On a case in the theory of $\varepsilon$-invariance of differential equations
JO  - Doklady Akademii Nauk
PY  - 1978
SP  - 1017
EP  - 1020
VL  - 238
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1978_238_5_a0/
LA  - ru
ID  - DAN_1978_238_5_a0
ER  -