1. Gustafson, Weidman, Kato, Wolf, Schechter, Browder, Rakocevic and Schmoeger essential spectra of the sum of two bounded operators and application to a transport operator;Abdmouleh;Math Nachr,2011
2. Stability of the S-essential spectra on a Banach space;Abdmouleh;Math Slovaca,2013
3. Aiena P. Semi-Fredholm operators, perturbation theory and localized SVEP. Caracas, Venezuela, 2007
4. Operators of Riesz type;Caradus;Pacific J Math,1966
5. Caradus S R. Generalized inverse and operator theory//Queen's Papers in Pure And Appl Math, 50. Queen's University, Kingston, Ont, 1978