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Gamal Maria F.: On power bounded operators with holomorphic eigenvectors II. In: Acta scientiarum mathematicarum, (86) 3-4. pp. 549-562. (2020)
Gamal Maria F.: Examples of cyclic polynomially bounded operators that are not similar to contractions, II. In: Acta scientiarum mathematicarum, (85) 1-2. pp. 313-323. (2019)
Gamal Maria F.: Invertibility of functions of operators and existence of hyperinvariant subspaces. In: Acta scientiarum mathematicarum, (85) 3-4. pp. 573-588. (2019)
Gamal Maria F.: Examples of cyclic polynomially bounded operators that are not similar to contractions. In: Acta scientiarum mathematicarum, (82) 3-4. pp. 597-628. (2016)
Gamal Maria F.: On quasisimilarity of polynomially bounded operators. In: Acta scientiarum mathematicarum, (81) 1-2. pp. 241-249. (2015)
Gamal Maria F.: A class of power bounded operators which are similar to contractions. In: Acta scientiarum mathematicarum, (80) 3-4. pp. 625-637. (2014)
Gamal Maria F.: On the shift index of contractions. In: Acta scientiarum mathematicarum, (78) 1-2. pp. 279-290. (2012)
Gamal Maria F.: On power bounded operators that are quasiaffine transforms of singular unitaries. In: Acta scientiarum mathematicarum, (77) 3-4. pp. 589-606. (2011)
Gamal Maria F.: On contractions that are quasiaffine transforms of unilateral shifts. In: Acta scientiarum mathematicarum, (74) 3-4. pp. 757-767. (2008)