1. National prospective cohort study of the burden of acute small bowel obstruction
2. National Income and Product Accounts
3. And see Chris Edwards and Daniel Mitchell, Global Tax Revolution: The Rise of Tax Competition and the Battle to Defend It (Washington;Chris Edwards;Cato Institute Tax and Budget Bulletin,2004
4. Missouri Governor Proposes Cap on Tax Credits;Elizabeth Carvlin;State Tax Notes is published by Tax Analysts in,2010