Mark Aagaard Robert B. Jones Carl-Johan H. Seger Lifted-FL: A Pragmatic Implementation of Combined Model Checking and Theorem Proving. 323-340 1999 conf/tphol/1999 TPHOLs http://dx.doi.org/10.1007/3-540-48256-3_22 db/conf/tphol/tphol99.html#AagaardJS99