On measuring internal dependence in a set of random variables.  The Annals of Statistics (15) 1215-1228, 1987.

Consistency for ACE-type methods.  The Annals of Statistics (18) 742-757, 1990.

On constructing confidence intervals for a multinomial parameter.  Proceedings of the 23rd Symposium on the Interface Between Computing Science and Statistics, 1991.

Review of Hastie, T.J. and Tibshirani, R.J., Generalized Additive Models.  In Journal of the American Statistical Association (86) 1140-1141, 1991.

Froeb, L.M., Koyak, R.A., and Werden, G.J.  What is the effect of bid-rigging on prices?  Economic Letters (42) 419-423, 1993.

The assessment of bid-rigging in military seafood procurement.  Proceedings of the Business and Economic Statistics Section, American Statistical Association, 1993.

Froeb, L.M. and Koyak, R.A.  Measuring and comparing smoothness in time series:  The production smoothing hypothesis.  Journal of Econometrics (64) 97-122, 1994.

Cox, D.C. et al.  A field test of lead-based paint testing technologies.  American Environmental Laboratory, June 1997.

Koyak, R.A., Schmehl, R.L., Cox, D.C., Dewalt, F.G., Haugen, M.M., Schwemberger, J.G., and Scalera, J.V.  Statistical models for the evaluation of portable lead-measurement technologies.  Part I:  chemical test kits.  Journal of Agricultural, Biological, and Environmental Statistics (3) 451-465, 1998.

Schmehl, R.L., Cox, D.C., Dewalt, F.G., Haugen, M.M., Koyak, R.A., Schwemberger, J.G., and Scalera, J.V.  Lead-based paint testing technologies:  summary of an EPA/HUD field study. American Industrial Hygiene Association Journal (60) 444-451, 1999.

Koyak, R.A.  An investigation of raking to improve capture-recapture estimates of population size. Proceedings of the 31st Symposium on the Interface Between Computing Science and Statistics, 1999.

Koyak, R.A., Schmehl, R.L., Cox, D.C., Dewalt, F.G., Haugen, M.M., Schwemberger, J.G., and Scalera, J.V.  Statistical models for the evaluation of portable lead-measurement technologies.  Part II:  X-ray fluorescence instruments.  Journal of Agricultural, Biological, and Environmental Statistics (5) 37-57, 2000.

Herrin, R.R., Barrett, N.L., Baker, B.G, and Koyak, R.A. Joint theater air and missile defense interoperability testing capabilities and challenges.  Journal of the International Test and Evaluation Association (22) 31–40, 2001.  (This paper won the 2002 Publications Award of the International Test and Evaluation Association).

Koyak, R.A.  An investigation of generalized raking in the synthetic estimation of population size.  Mathematical Population Studies (11) 29–49, 2004.

Brown, G.G., Grose, R.T., and Koyak, R.A.  Scheduling a long-term, high-risk project with task durations and costs that may increase over time.  Military Operations Research Journal (11) 41–62, 2006.

Ruth, D.M. and Koyak, R.A.  Applications of assignment algorithms to nonparametric tests for homogeneity.  Proceedings of the Section on Nonparametic Statistics, 2266–2278, American Statistical Association, 2010.

Ruth, D.M. and Koyak, R.A.  Nonparametric tests for homogeneity based on non-bipartite matching.  Accepted for publication, Journal of the American Statistical Association, 2011.