"The Use of Bounded-Influence Regression in Data Analysis: Theory, Computation and Graphics."

Roy E. Welsh and W. S. Krasker. In Computer Science and Statistics: Fourteenth Symposium on the Interface, Berlin, Germany: June 1983.

"Diagnostics and Graphics for Influential Data."

Roy E. Welsch. In American Society for Quality Control 37th Annual Quality Congress Transactions, Milwaukee, WI: May 1983.

"Discussion of 'Minimax Aspects of Bounded-Influence Regression,' by Peter Huber."

Krasker, William and Roy E. Welsch. Journal of the American Statistical Association Vol. 78, No. 381 (1983): 72-73.

"Efficient Bounded-Influence Regression Estimation."

Krasker, William S. and Roy E. Welsch. Journal of the American Statistical Association Vol. 77, No. 379 (1982): 596-604.

"Discussion of 'Robust Methods in Econometrics,' by Roger Koenker."

Welsch, Roy E. Econometric Reviews Vol. 1, No. 2 (1982): 279-284.

"Influence Functions and Regression Diagnostics."

Welsch, Roy E. In Modern Data Analysis, edited by A. Siegel and R. Launer, 149-169. New York, NY: Academic Press, Inc., 1982.