@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/