TY  - JOUR
AU  - Yu. N. Subbotin
TI  - Approximations by polynomial and trigonometric splines of third order preserving some properties of approximated functions
JO  - Trudy Instituta matematiki i mehaniki
PY  - 2007
SP  - 156
EP  - 166
VL  - 13
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/TIMM_2007_13_2_a14/
LA  - ru
ID  - TIMM_2007_13_2_a14
ER  -