Matthew D. T. Lewis Tobias Schubert Bernd Becker Multithreaded SAT Solving. 926-931 2007 conf/aspdac/2007 ASP-DAC http://doi.ieeecomputersociety.org/10.1109/ASPDAC.2007.358108 db/conf/aspdac/aspdac2007.html#LewisSB07