1. Fixed point characterization of Büchi automata on infinite trees;Arnold,1987
2. Results on the propositional μ-calculus;Kozen;Theoret. Comput. Sci.,1983
3. Alternating automata and the exponential decidability of an extended branching time temporal logic;Muller,1986
4. On fixed-point clones;Niwinski,1986
5. Decidability of second-order theories and automata on infinite trees;Rabin;Trans. Amer. Math. Soc.,1969