Tajmouati, Abdelaziz, Mohammed Karmouni, and Mbark Abkari. “PSEUDO SEMI B-FREDHOLM AND GENERALIZED DRAZIN INVERTIBLE OPERATORS THROUGH LOCALIZED SVEP”. Italian Journal of Pure and Applied Mathematics 37 (January 31, 2017): 301–314. Accessed September 16, 2026. https://journals.uniurb.it/index.php/ijpam/article/view/6708.