References

Cohen(1988)

Cohen, J. (1988), Statistical power analysis for the behavioral sciences, Academic Press, New York, 2nd edn.

Goldstein(1989)

Goldstein, R. (1989), ``Power and sample size via MS/PC-DOS computers,'' The American Statistician, 43, 253--260.

Kraemer and Thiemann(1987)

Kraemer, H. C. and Thiemann, S. (1987), How Many Subjects? Statistical Power Analysis in Research, Sage Publications, Newbury Park, CA.

Lenth(1989)

Lenth, R. V. (1989), ``Alg AS 243---Cumulative distribution function of the noncentral t distribution,'' Applied Statistics, 38, 185--189.

Thomas and Krebs(1997)

Thomas, L. and Krebs, C. J. (1997), ``A Review of Statistical Power Analysis Software,'' Bulletin of the Ecological Society of America, 78, in press.