What is the best source to research information around the Sarbanes Oxley legislation?

I am writing a research paper on the impact of Sarbanes-Oxley on publicly traded companies. My research is focusing on investments related to additional controls.What is the best source to research information around the Sarbanes Oxley legislation?
Go to the SEC web site, under the section on internal control reporting provisions (linked below). There, you will see a number of links to studies, testimony, etc. from public companies, accounting firms, investors and so on.



CFO magazine, the FEI, and a publication titled 'Compliance Week' also have information. Another source is the AICPA web site, also linked below.

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