TY  - JOUR
AU  - O. N. Vasilenko
TI  - On a relationship between approximation of exponentials and approximation of $\psi$-functions
JO  - Vestnik Moskovskogo universiteta. Matematika, mehanika
PY  - 1991
SP  - 57
EP  - 58
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/VMUMM_1991_3_a11/
LA  - ru
ID  - VMUMM_1991_3_a11
ER  -