A. H. Ahmed, B., Shawket kadhim, S. (2005). Posinormal Operators and Weyl's Theorem. , 8(2), 120-124.
Buthainah A. H. Ahmed; Shaima Shawket kadhim. "Posinormal Operators and Weyl's Theorem". , 8, 2, 2005, 120-124.
A. H. Ahmed, B., Shawket kadhim, S. (2005). 'Posinormal Operators and Weyl's Theorem', , 8(2), pp. 120-124.
A. H. Ahmed, B., Shawket kadhim, S. Posinormal Operators and Weyl's Theorem. , 2005; 8(2): 120-124.


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