TY  - JOUR
AU  - L. P. Vlasov
TI  - Approximative properties of sets in normed linear spaces
JO  - Trudy Matematicheskogo Instituta imeni V.A. Steklova
PY  - 1973
SP  - 1
EP  - 66
VL  - 28
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/RM_1973_28_6_a0/
LA  - en
ID  - RM_1973_28_6_a0
ER  -