TY  - JOUR
AU  - I. N. Katkovskaya
AU  - V. G. Krotov
TI  - On the Continuity of Best Approximations by Constants on Balls in Metric Measure Spaces
JO  - Matematičeskie zametki
PY  - 2020
SP  - 221
EP  - 228
VL  - 107
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_2020_107_2_a4/
LA  - ru
ID  - MZM_2020_107_2_a4
ER  -