@article{GDZPPN002430444,
title = {Degree of Best Approximation by Trigonometric Blending Functions.},
journal = {Mathematische Zeitschrift},
volume = {189},
year = {1985},
pages = {143-150},
zbl = {0547.41011},
url = {http://dml.mathdoc.fr/item/GDZPPN002430444}
}
Haußmann, W.; Jetter, K.; Steinhaus, B. Degree of Best Approximation by Trigonometric Blending Functions.. Mathematische Zeitschrift, Tome 189 (1985) pp. 143-150. http://gdmltest.u-ga.fr/item/GDZPPN002430444/