1. An O(nlogn) sorting network;Ajtai,1983
2. Efficient CNF encoding of Boolean cardinality constraints;Bailleux,2003
3. The challenge of computer mathematics;Barendregt;Trans. A R. Soc.,2005
4. Sorting networks and their applications;Batcher,1968
5. Interactive Theorem Proving and Program Development;Bertot,2004