TY  - JOUR
AU  - V. A. Il'in
TI  - Necessary and sufficient conditions for spatial decompositions to be bases and to be equiconvergent with a trigonometric series.~I
JO  - Differencialʹnye uravneniâ
PY  - 1980
SP  - 771
EP  - 794
VL  - 16
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1980_16_5_a0/
LA  - ru
ID  - DE_1980_16_5_a0
ER  -