Gary L. Rogers Andy D. Perkins Charles A. Phillips John D. Eblen Faisal N. Abu-Khzam Michael A. Langston Using out-of-core techniques to produce exact solutions to the maximum clique problem on extremely large graphs. 374-381 2009 AICCSA http://doi.ieeecomputersociety.org/10.1109/AICCSA.2009.5069351 conf/aiccsa/2009 db/conf/aiccsa/aiccsa2009.html#RogersPPEAL09