"History of Bounded-Influence Estimation and Comments on Paper by Frank Hampel, David Hinkley, and R. Douglas Martin."

Roy E. Welsch. In 1978 Proceedings of the A. S. A. Statistical Computing Section, Washington, DC: December 1978.

"Techniques for Nonlinear Least-Squares and Robust Regression."

Dennis, John and Roy E. Welsch. Communications in Statistics Vol. 7, No. 4 (1978): 345-359.

"The Hat Matrix in Regression and ANOVA."

Hoaglin, David C. and Roy E. Welsch. The American Statistician Vol. 32, No. 1 (1978): 17-22.

"Discussion of 'Statisticians Can Matter' by Harry V. Roberts."

Welsch, Roy E. The American Statistician Vol. 32, No. 2 (1978): 52-53.

"Finding Influential Subsets of Data in Regression Models."

Roy E. Welsch and Steve Peters. In Proceedings of the Eleventh Interface Symposium on Computer Science and Statistics, edited by A. R. Gallant and T. M. Gerig. Raleigh, NC: March 1978.

"TROLL Experimental Programs, SENSSYS (Model Sensitivity Analysis)."

Welsch, Roy E. and Steve Peters. Computing Documentation. M.I.T. Information Processing Center.