1. What Is a Good Sequent Calculus?;Gentzen Calculi for Modal Propositional Logic;2010
2. Semantic Methods;Gentzen Calculi for Modal Propositional Logic;2010
3. Purely Syntactic Methods;Gentzen Calculi for Modal Propositional Logic;2010
4. Sequent Systems for Modal Logics;Handbook of Philosophical Logic;2002
5. Tableau Methods for Modal and Temporal Logics;Handbook of Tableau Methods;1999