1. Diagonal operators, s-numbers and Bernstein pairs;Aksoy;Note Mat.,1997
2. J.M. Almira, T. Oikhberg, Approximation schemes satisfying Shapiro’s theorem, Preprint.
3. Entropy, Compactness, and the Approximation of Operators;Carl,1990
4. Absolutely Summing Operators;Diestel,1995
5. Renormings of Banach spaces;Godefroy,2001