@article{1195523111,
author = {Urata, Yosihiro},
title = {A theorem of Bari on the completeness of orthonormal systems},
journal = {Proc. Japan Acad.},
volume = {39},
number = {9},
year = {1963},
pages = { 160-161},
language = {en},
url = {http://dml.mathdoc.fr/item/1195523111}
}
Urata, Yosihiro. A theorem of Bari on the completeness of orthonormal systems. Proc. Japan Acad., Tome 39 (1963) no. 9, pp. 160-161. http://gdmltest.u-ga.fr/item/1195523111/