The following publications are possibly variants of this publication:
- The Complexity of Nested Counterfactuals and Iterated Knowledge Base RevisionsThomas Eiter, Georg Gottlob. jcss, 53(3):497-512, 1996.
- On the Complexity of Propositional Knowledge Base Revision, Updates, and CounterfactualsThomas Eiter, Georg Gottlob. ai, 57(2-3):227-270, 1992.
- On the Complexity of Propositional Knowledge Base Revision, Updates, and CounterfactualsThomas Eiter, Georg Gottlob. PODS 1992: 261-273 [doi]