1. H. Kleine Büning, U. Bubeck, Theory of quantified Boolean formulas, in: [71], 2009, pp. 735–760.
2. QBF-based formal verification: experience and perspectives;Benedetti;J. Satisf. Boolean Model. Comput.,2008
3. Asymptotically optimal encodings of conformant planning in QBF;Rintanen,2007
4. Completeness in the polynomial-time hierarchy: a compendium;Schaefer;SIGACT News,2002
5. E. Giunchiglia, P. Marin, M. Narizzano, Reasoning with quantified Boolean formulas, in: [71], 2009, pp. 761–780.