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Could you suggest good articles / books / online materials on correlation stress testing?

Correlation stress testing: say, we have a positive semidefinite correlation matrix. We might want to explore the impact on the results if some or all elements of the matrix are increased or a decrease by a given value/s. Of course, there are limits to stress testing due to the requirement of the correlation matrix to remain positive semidefinite.

Thank you in advance for your suggestions!

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What "results"? You don't say what you're doing with the matrix. –  Darsh Ranjan Sep 11 '10 at 21:40
    
Sorry for going off topic, but why do we have two separate tags "matrix" and "matrices"? Looks confusing to me. –  Federico Poloni Sep 11 '10 at 21:56
    
Say, you have a portfolio of assets and you want to estimate the sensitivity of the diversification benefit to a severe change in correlations (therefore, the need to stress correlation matrix) –  Edward Sep 12 '10 at 10:51

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