1. An Invitation to Operator Theory,;Y. Abramovich;Graduate Studies in Mathematics,2002
2. Fredholm and Local Spectral Theory, with Applications to Multipliers,;P. Aiena;Kluwer,2004
3. Semi-Fredholm Operators, Perturbation Theory and Localized SVEP,;P. Aiena;XX Escuela Venezolana de Matemáticas,2007
4. On a localized single-valued extension property,;P. Aiena;Math. Proc. R. Ir. Acad.,2004
5. The concept of spectral dichotomy for linear difference equations,;B. Aulbach;J. Math. Anal. Appl.,1994