@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/