1. The HDF group, http://www.hdfgroup.org/.
2. XML Schema, http://en.wikipedia.org/wiki/XML Schema.
3. Subversion: the standard in open source version control, http://svnbook.red-bean.com/.
4. An open source approach to developing software in a small organization;Martin;IEEE Softw.,2007
5. CDash, http://www.cdash.org/.