Random walks, universal traversal sequences, and the complexity of maze problems

Relationships between nondeterministic and deterministic tape complexities

1970 • 1,361 citations

Computational Complexity of Probabilistic Turing Machines

1977 • 709 citations

Space-bounded reducibility among combinatorial problems

1975 • 371 citations

Random walks on graphs

1974 • 243 citations

New problems complete for nondeterministic log space

1976 • 134 citations

One-way log-tape reductions

1978 • 73 citations