[> Iranian Mathematical Society
[> American Mathematical Society
[> Cornell University Library
[> Functional Analysis preprint
[> Operator Algebras in Canada
[> Canadian Mathematical Society
[> Mathematics Information Servers
[> Operator Algebra Resources
[> Counterexamples in Functional Analysis
[> Operator Algebraists Directory
[> ZentralblattMath 

[> Mathworld
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[> Gottingen Library
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[> Median Impact Factor
[> Stanford encyclopedia