John Derrick Gerhard Schellhorn Heike Wehrheim Mechanizing a Correctness Proof for a Lock-Free Concurrent Stack. 78-95 2008 FMOODS http://dx.doi.org/10.1007/978-3-540-68863-1_6 conf/fmoods/2008 db/conf/fmoods/fmoods2008.html#DerrickSW08