Ищу статьи: S. Heinrich, Finite representability and super-ideals of operators // Diss. Math. 172, 37 P. (1980). S. Heinrich, Closed operator ideals and interpolation // J. Funct. Anal. 35, 397-411 (1980). S. Heinrich, Ultraproducts in Banach space theory // J. Reine Angew. Math. 313, 72-104 (1980). S. Heinrich, Ultrapowers of locally convex spaces and applications I // Math. Nachr. 118, 285-315 (1984). S. Heinrich, Ultrapowers of locally convex spaces and applications II // Math. Nachr. 121, 211-229 (1985). D. Vogt, On Two Problems of Mityagin// Mathematische Nachrichten, Volume 141, Issue 1, pages 13–25, 1989 D. Vogt, Kernels of Eidelheit matrices and related topics // Doga, Math., 1986, vol. 10, p. 232-256
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