@article{05282497,
title = {Spectral theory from the second-order },
journal = {International Journal of Mathematics and Mathematical Sciences},
volume = {2007},
year = {2007},
doi = {10.1155/2007/16595},
zbl = {1147.47026},
language = {en},
url = {http://dml.mathdoc.fr/item/05282497}
}
Dhaouadi, Lazhar. Spectral theory from the second-order . International Journal of Mathematics and Mathematical Sciences, Tome 2007 (2007) . doi : 10.1155/2007/16595. http://gdmltest.u-ga.fr/item/05282497/