2011 report from the Organisation for Economic Co-operation and Development on widening income inequalities among its member countries worldwide.
2010 meta-study in the American Journal of Public Health on the broader consequences of raising alcohol prices.
2009 metastudy by the University of Florida examining the reported effects of alcohol price/taxes on purchasing and consumption habits.
2011 analysis by researchers from Harvard University, the Massachusetts Institute of Technology and Wellesley College on the Commonwealth's insurance-requirement law.
2008 paper by California State University examines the state's manufacturing job loss and explores possible solutions.
2006 study by California State University, Sacramento, on how state budgeting changed after the enactment of Proposition 13.
2008 paper by the Widener University School of Law on approaches for realizing the potential benefits of energy efficiency in the United States.
2008 Brookings Institution study on options for moving disadvantaged individuals to the banking system.
2009 review by the World Bank of methods available for addressing transportation-sector emissions and congestion.