An analytical approach to evidence : text, problems, and cases / Ronald J. Allen, John Henry Wigmore Professor of Law, Northwestern University School of Law, Eleanor Swift, Professor of Law, University of California at Berkeley School of Law, David S. Schwartz, Foley & Lardner-Bascom Professor of Law, University of Wisconsin Law School, Michael S. Pardo, Henry Upson Sims Professor of Law, University of Alabama School of Law, Alex Stein, Professor of Law, Benjamin N. Cardozo School of Law.