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  1. The -Jeribi essential spectrum

    Article • Ukrains’kyi Matematychnyi Zhurnal, March 2021, Institute of Mathematics National Academy of Sciences of Ukraine

    Belabbaci Chafika, Professor Aref Jeribi

  2. Spectral radius of S-essential spectra

    Article • Matematychni Studii, October 2020, Ivan Franko National University of Lviv

    Belabbaci Chafika

  3. S-essential spectra and measure of noncompactness

    Article • Mathematica Slovaca, January 2017, De Gruyter

    Belabbaci Chafika, Aissani mouloud