Publications:

  1. On strong cyclic behavior of the adjoint of w-hyponormal Operators (with B. El Wahbi and E. H. Zerouali). Acta Sci. Math. (Szeged). To appear. Some automorphism invariance properties for multicontractions (with D. Timotin), Indiana Univ. Math. J. 56 (2007), no. 1, 481--499. pdf
  2. Back to RS-SR spectral theory. Perspectives in operator theory (with E.H. Zerouali), 55--66, Banach Center Publ., 75, Polish Acad. Sci., Warsaw, 2007. pdf
  3. Characteristic functions for multicontractions and automorphisms of the unit ball (with D. Timotin). Integral Equations Operator Theory 57 (2007), no. 2, 153--166. pdf
  4. On Taylor and other joint spectra for commuting n-tuples of operators (with E.H. Zerouali). J. Math. Anal. Appl. 326 (2007), no. 1, 521--532. pdf
  5. Local spectral theory of linear operators RS and SR (with E.H. Zerouali). Integral Equations Operator Theory 54 (2006), no. 1, 1--8. pdf
  6. Spectral properties of upper triangular block operators (with E.H. Zerouali and H. Zguitti). Acta Sci. Math. (Szeged) 71 (2005), no. 3-4, 681--690. pdf
  7. Spectra of upper triangular operator matrices (with E.H. Zerouali and H. Zguitti). Proc. Amer. Math. Soc. 133 (2005), no. 10, 3013--3020 pdf
  8. Unitary equivalence of operators and dilations. Studia Math. 164 (2004), no. 3, 253--255. Fractional transforms of operators and dilations. Bull. Math. Soc. Sci. Math. Roumanie (N.S.) 45(93) (2002), no. 1-2, 109--113 (2003). A note on dual algebras and perturbations of contractions (with D. Timotin). Bull. Math. Soc. Sci. Math. Roumanie (N.S.) 44(92) (2001), no. 2, 193--198. Finite rank perturbations of contractions (with D. Timotin). Integral Equations Operator Theory 36 (2000), no. 3, 253--268. pdf
  9. Propriétés spectrales des restrictions d'opérateurs de la classe A. Czechoslovak Math. J. 49(124) (1999), no. 1, 13--20.Functional models and finite-dimensional perturbations of the shift (with D. Timotin). Integral Equations Operator Theory 29 (1997), no. 2, 187--196.A note on the reflexivity of weakly closed subspaces of operators. J. Operator Theory 34 (1995), no. 2, 251--261. On the extension of the properties (A m,n). J. Operator Theory 34 (1995), no. 1, 3--16.Espaces duaux et propriétés (Am,n). Acta Sci. Math. (Szeged) 58 (1993), no. 1-4, 431--441.