TY  - JOUR
AU  - V. H. Hristov
AU  - K. G. Ivanov
TI  - Realization of K-Functionals on Subsets and Constrained Approximation
JO  - Mathematica balkanica
PY  - 1990
SP  - 236
VL  - 4
IS  - 3-4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MABA_1990_4_3-4_a2/
ID  - MABA_1990_4_3-4_a2
ER  -