TY  - JOUR
AU  - L. I. Kamynin
AU  - B. N. Khimchenko
TI  - An aspect of the development of the theory of the isotropic strict extremum principle 

JO  - Differencialʹnye uravneniâ
PY  - 1980
SP  - 280
EP  - 292
VL  - 16
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1980_16_2_a10/
LA  - ru
ID  - DE_1980_16_2_a10
ER  -