1. 2019. http://memcached.org. 2019. http://memcached.org.
2. 2019. https://github.com/antlr/grammars-v4. 2019. https://github.com/antlr/grammars-v4.
3. Database Test Suite 5. 2019. http://osdldbt.sourceforge.net/. Database Test Suite 5. 2019. http://osdldbt.sourceforge.net/.