@article {67243,
	title = {Generalized Weyl{\textquoteright}s theorem for an elementary operator},
	journal = {Bull. Math. Anal. ApplBull. Math. Anal. Appl},
	volume = {3},
	year = {2011},
	month = {2011},
	pages = {123-131},
	author = {Farida Lombarkia}
}
