TY  - JOUR
AU  - T. Yu. Kulikova
TI  - On the approximation of functions by a~hyperbolic angle in the $L_2$ metric
JO  - Matematičeskie zametki
PY  - 1999
SP  - 471
EP  - 474
VL  - 65
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_1999_65_3_a16/
LA  - ru
ID  - MZM_1999_65_3_a16
ER  -