TY  - JOUR
AU  - V. V. Smelov
TI  - Approximation of piecewise-smooth functions by the eigenelements of two Sturm–Liouville problems
JO  - Doklady Akademii Nauk
PY  - 1980
SP  - 573
EP  - 577
VL  - 250
IS  - 3
UR  - http://geodesic.mathdoc.fr/item/DAN_1980_250_3_a15/
LA  - ru
ID  - DAN_1980_250_3_a15
ER  -