@article{1077472100,
author = {Bellman, Richard},
title = {Convergence of non-harmonic Fourier series},
journal = {Duke Math. J.},
volume = {10},
number = {1},
year = {1943},
pages = { 551-552},
language = {en},
url = {http://dml.mathdoc.fr/item/1077472100}
}
Bellman, Richard. Convergence of non-harmonic Fourier series. Duke Math. J., Tome 10 (1943) no. 1, pp. 551-552. http://gdmltest.u-ga.fr/item/1077472100/