1. Aiena P.,Classes of operators satisfying a-Weyl’s theorem, (pre-print, 2004).
2. Aiena P., Monsalve O.,The single valued extension property and the generalized Kato decomposition property, Acta Sci. Math. (Szeged),67 (2001), 461–477.
3. Aiena P., Miller T. L., Neumann M. M.,On a localised single valued extension property, Math. Proc. Royal Irish Acad., (to appear).
4. Aiena P., Villafañe F.,Weyl’s theorem of some classes of operators, Integr. Equat. Op. Th., (to appear).
5. Berberian S. K.,The Weyl spectrum of an operator, Michigan Math. J.,16 (1969), 273–279.