An Algorithm for Finding the Exact Significance Levels of r × c Contingency Tables
提出一种算法，用于计算r×c列联表的精确显著性水平，适用于需要精确p值而非近似值的统计检验场景。
Marcello Pagano, Katherine Taylor Halvorsen, An Algorithm for Finding the Exact Significance Levels of r × c Contingency Tables, Journal of the American Statistical Association, Vol. 76, No. 376 (Dec., 1981), pp. 931-934