@article{1077310232,
author = {Howland, James S.},
title = {On a theorem of Aronszajn and Donoghue on singular
spectra},
journal = {Duke Math. J.},
volume = {41},
number = {1},
year = {1974},
pages = { 141-143},
language = {en},
url = {http://dml.mathdoc.fr/item/1077310232}
}
Howland, James S. On a theorem of Aronszajn and Donoghue on singular spectra. Duke Math. J., Tome 41 (1974) no. 1, pp. 141-143. http://gdmltest.u-ga.fr/item/1077310232/