TY  - JOUR
AU  - V. V. Sokolov
TI  - Pseudosymmetries and differential substitutions
JO  - Funkcionalʹnyj analiz i ego priloženiâ
PY  - 1988
SP  - 47
EP  - 56
VL  - 22
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/FAA_1988_22_2_a4/
LA  - ru
ID  - FAA_1988_22_2_a4
ER  -