Progress measures, immediate determinacy, and a subset construction for tree automataNils Klarlund1992LICS 1992
Progress measures for complementation ω-automata with applications to temporal logicNils Klarlund1991FOCS 1991
Rabin measures and their applications to fairness and automata theoryNils KlarlundDexter Kozen1991LICS 1991
Proving nondeterministically specified safety properties using progress measuresNils KlarlundFred B. Schneider1993Information and Computation