@article{1178243865,
author = {Watari, Chinami},
title = {Best approximation by Walsh polynomials},
journal = {Tohoku Math. J. (2)},
volume = {15},
number = {4},
year = {1963},
pages = { 1-5},
language = {en},
url = {http://dml.mathdoc.fr/item/1178243865}
}
Watari, Chinami. Best approximation by Walsh polynomials. Tohoku Math. J. (2), Tome 15 (1963) no. 4, pp. 1-5. http://gdmltest.u-ga.fr/item/1178243865/