@article{GDZPPN001168371,
title = {Approximation by Functions Having Restricted Ranges: Equality Case.},
journal = {Numerische Mathematik},
volume = {15},
year = {1970},
pages = {71-78},
zbl = {0175.34902},
url = {http://dml.mathdoc.fr/item/GDZPPN001168371}
}
TAYLOR, G.D. Approximation by Functions Having Restricted Ranges: Equality Case.. Numerische Mathematik, Tome 15 (1970) pp. 71-78. http://gdmltest.u-ga.fr/item/GDZPPN001168371/