1. Finite Model Theory and Its Applications;Grädel,2007
2. Toward logic tailored for computational complexity;Gurevich,1984
3. Descriptive Complexity;Immerman,1999
4. Generalized first-order spectra and polynomial-time recognizable sets;Fagin,1974
5. Relational queries computable in polynomial time;Immerman;Inf. Control,1986