1. Multisource File Transfer Protocol, http://en.wikipedia.org/wiki/Multisource_File_Transfer_Protocol
2. Rsync, http://rsync.samba.org/
3. TigerTree Hash Code, http://tigertree.sourceforge.net/
4. 3-Sum Problem, http://en.wikipedia.org/wiki/3SUM
5. Lecture Notes in Computer Science;R.J. Anderson,1996