TY  - JOUR
AU  - I. V. Petrova
TI  - Approximation on a~hyperboloid in the $L_2$-metric
JO  - Trudy Matematicheskogo Instituta imeni V.A. Steklova
PY  - 1992
SP  - 215
EP  - 228
VL  - 194
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/TM_1992_194_a13/
LA  - ru
ID  - TM_1992_194_a13
ER  -