Edward C. Horvath, Shui Lam, and Ravi Sethi. A level algorithm for preemptive scheduling. Douglas Comer and Ravi Sethi. The complexity of trie index construction. Peter J. Downey and Ravi Sethi.
Assignment commands with array references.
Conditional expressions with equality tests. Bhaskaram Prabhala and Ravi Sethi. Efficient computation of expressions with common subexpressions. Ravi Sethi and Adrian Tang. Peter J. Downey, Ravi Sethi, and Robert Endre Tarjan.