1. Computational Complexity: A Modern Approach;Arora,2009
2. On the complexity of propositional logics;Chagrov,1985
3. Modal Logic;Chagrov,1997
4. Computing queries with higher-order logics;Hella;Theor. Comput. Sci.,2006
5. Complexity of admissible rules;Jeřábek;Arch. Math. Log.,2007