Journal of Computer and System Sciences · 1990 · 46 citations · 12 references
12
Ashok K. Chandra, Dexter Kozen, Larry J. Stockmeyer · Journal of the ACM · 1981 · 1.2K citations · Full text
Nondeterministic Space is Closed under Complementation
Neil Immerman · SIAM Journal on Computing · 1988 · 649 citations