|  | 
 [47A50] 
Equations and inequalities involving linear operators, with vector unknowns
 
  - Castro, L.P.,
 
    Strongly Elliptic Operators for a Plane Wave Diffraction Problem in
    Bessel Potential Spaces, Volume
    3, Issue 2, Article 25,
    2002. [002_01] 
       
  - Dannan, F.
 
    Matrix and Operator Inequalities, Volume
    2, Issue 3, Article 34,
    2001. [029_01] 
       
  - Gaur, A.K.
 
    Norm Inequalities in Star Algebras, Volume
    3, Issue 1, Article 1, 2002. [051_01] 
 
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