TY  - JOUR
AU  - V. V. Petrov
AU  - A. V. Zaporozhets
TI  - A principle for evolving systems
JO  - Doklady Akademii Nauk
PY  - 1975
SP  - 779
EP  - 782
VL  - 224
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1975_224_4_a9/
LA  - ru
ID  - DAN_1975_224_4_a9
ER  -