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"Pushdown Automata, Graphs, Ends, Second-Order Logic, and Reachability Problems"
David E. Muller, Paul E. Schupp (1981)
- David E. Muller, Paul E. Schupp:
Pushdown Automata, Graphs, Ends, Second-Order Logic, and Reachability Problems. STOC 1981: 46-54
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