References
- Kendall , Maurice G. and Stuart , Alan . 1973 . The Advanced Theory of Statistics, , 3rd Ed. , Vol. 2 , New York : Hafner Press .
- Yarnold , James K. 1970 . “The Minimum Expectation in X2 Goodness of Fit Tests and the Accuracy of Approximations for the Null Distribution,” . Journal of the American Statistical Association , 65 : 864 – 886 .