1. Simple and effective confidence intervals for proportions and differences of proportions result from adding two successes and two failures;Agresti;Amer. Statist.,2000
2. A new test for 2 x 2 tables;Barnard;Nature,1945
3. Significance tests for 2 x 2 tables;Barnard;Biometrika,1947
4. Power Comparison of Exact Unconditional Tests for Comparing Two Binomial Proportions;Berger,1994
5. More powerful tests from confidence interval p values;Berger;Amer. Statist.,1996