A 1.60 Approximation Algorithm for Routing Multiterminal Nets Around a Rectangle, (with S. L. Lee), SIAM Journal on Computing, Vol. 16, No. 4, August 1987, pp. 669 -- 704.

Evaluation of Arithmetic Expressions with Algebraic Identities, (with J. JaJa), SIAM Journal on Computing, Vol. 11, No. 4, November 1982, pp. 633 -- 662.

Bounds for LPT Schedules for Uniform Processors, (with O. H. Ibarra and S. Sahni), SIAM Journal on Computing, Vol. 6, No. 1, March 1977, pp. 155 -- 166.