"Resistant Estimation for Simultaneous-Equations Models Using Weighted Instrument Variables."

Krasker, William S. and Roy E. Welsch. Econometrica Vol. 53, No. 6 (1985): 1475-1488.

"TROLL Program BIV: Bounded-Influence Instrumental Variables."

Roy E. Welsch and A. Samarov. Technical Report No. 44, M.I.T. Center for Computational Research in Economics in Management Science. 1984.

"Estimation for Dirty Data and Flawed Models."

Krasker, W. S., E. Kuh and Roy E. Welsch. In Handbook of Econometrics, edited by Michael D. Intrilligator and Zvi Griliches, 651-698. Amsterdam, The Netherlands: North-Holland, 1983.

"Influential Data."

Welsch, Roy E. In Encyclopedia of Statistical Sciences, edited by N. L. Johnson and S. Kotz, 119-212. New York, NY: Wiley, 1983.

"Leverage."

Welsch, Roy E. In Encyclopedia of Statistical Sciences, edited by N. L. Johnson and S. Kotz, 610-611. New York, NY: Wiley, 1983.

"Discussion of 'Developments in Linear Regression Methodology: 1959-1982,' by R. R. Hocking."

Welsch, Roy E. Technometrics Vol. 25, No. 3 (1983): 245-246.