1. The Burnside Problem and Identities in Groups;Adian,1979
2. On the Power of Nondeterminism in Dynamic Logic;Berman,1982
3. Deterministic dynamic logic is strictly weaker than dynamic logic;Boyarskaya,1981
4. First-Order Dynmaic Logic;Harel,1979
5. Expressing program looping in regular dynamic logic;Meyer;Theoret. Comput. Sci.,1982