M.W. Moskewicz, C.F. Madigan, Y. Zhao, L. Zhang, and S. Malik,
Chaff: Engineering an Efficient SAT Solver,
38th Design Automation Conference (DAC '01), June 2001, pp. 530-535.
S. Pilarski, and G. Hu,
SAT with Partial Clauses and Back Leaps,
39th Design Automation Conference (DAC '02),
June 2002.
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F. Bacchus,
Enhancing Davis Putnam with Extended Binary Clause Reasoning,
18th National Conference on Artificial Intelligence (AAAI '02),
July-August 2002.