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10.1090/S0002-9947-01-02668-X
Strang, Gilbert, Zhou, Ding-XuanVolume:
353
Language:
english
Journal:
Transactions of the American Mathematical Society
DOI:
10.1090/S0002-9947-01-02668-X
Date:
May, 2001
File:
PDF, 208 KB
english, 2001