"Exploratory Statistical Analysis of Currency and Equity Market Volatility."

Welsch, Roy E., P. Kempthorne, and A. Samarov. IFSRC Working Paper N. 204-92. 1992.

"Collinearity Diagnostics: VIF's Revisited."

Roy E. Welsch, E. Newton and A. Venetoulias. In Technical Report TR-68, Cambridge, MA: December 1990.

"An Alternative to Cp Model Selection that Emphasizes the Quality of Coefficient Estimation."

Roy E. Welsch. In Probability, Statistics, and Mathematics: Papers in Honor of Samuel Karlin, edited by D. L. Iglehart, K. B. Athreya, and T. W. Anderson. New York, NY: December 1989.

"Hypercard as an Environment for Guided Computing in Statistics."

Roy E. Welsch, D. A. Belsley and A. Venetoulias. In Proceedings of the Twentieth Symposium on the Interface, Cambridge, MA: December 1989.

"Discussion of 'Regression Diagnostics with Dynamic Graphics' by R. D. Cook and S. Weisberg."

Welsch, Roy E. Technometrics Vol. 31, No. 3 (1989): 307-308.

"Computer Guided Diagnostics."

Roy E. Welsch, D. A. Belsley and A. Venetoulias. In COMPSTAT Proceedings in Computational Statistics, edited by D. Edwards and N. E. Raun. Heidelberg, Germany: December 1988.