"Improving the Reliability of Econometric Models."

Roy E. Welsch. In 1979 Proceedings of the Social Statistics Section, Washington, DC: December 1979.

"A Comparison of Heuristic Methods Used in Hierarchical Production Planning."

Roy E. Welsch, H. Haas, and A. Hax. Technical Report No. 160, Operations Research Center, M.I.T. 1979.

"Data Analysis, Communication, and Control."

Welsch, Roy E. In Communications and Control in Society, edited by Klaus Krippendorf, 99-114. London, England: Gordon and Breech, Inc., 1979.

"Discussion of 'Nonparametric Statistical Data Modeling' by Emanuel Parzen."

Welsch, Roy E. Journal of the American Statistical Association Vol. 74, No. 365 (1979): 123-124.

"Discussion of 'Teaching Statistical Computing Using Computer Packages' by Ronald A. Thisted."

Welsch, Roy E. The American Statistician Vol. 33, No. 1 (1979): 34.

"Computing Regression Diagnostics."

Roy E. Welsch. In Proceedings of the Stanford Conference on Numerical and Statistical Computing, edited by Gene Golub and Virginia Klema. Cambridge, MA: December 1978.