TY  - JOUR
AU  - V. V. Shan'kov
TI  - Difference operators with variable step
JO  - Informatics and Automation
PY  - 1987
SP  - 229
EP  - 230
VL  - 180
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/TRSPY_1987_180_a141/
LA  - ru
ID  - TRSPY_1987_180_a141
ER  -