@article{1077491903,
author = {Galbraith, A. S. and Warschawski, S. E.},
title = {The convergence of expansions resulting from a self-adjoint
boundary problem},
journal = {Duke Math. J.},
volume = {6},
number = {1},
year = {1940},
pages = { 318-340},
language = {en},
url = {http://dml.mathdoc.fr/item/1077491903}
}
Galbraith, A. S.; Warschawski, S. E. The convergence of expansions resulting from a self-adjoint
boundary problem. Duke Math. J., Tome 6 (1940) no. 1, pp. 318-340. http://gdmltest.u-ga.fr/item/1077491903/