1. Valve: Source SDK (2011),
http://source.valvesoftware.com/sourcesdk.php
(February 20, 2012)
2. Crytek: CryENGINE 3 SDK (2011),
http://mycryengine.com/
(February 20, 2012)
3. Epic Games: Unreal Tournament 2004 (2004),
http://www.unreal.com/
(February 20, 2012)
4. Lecture Notes in Computer Science;J. Gemrot,2011
5. Ierusalimschy, R., Celes. W., de Figueiredo L.H.: Lua programming language,
http://www.lua.org/
(February 20, 2012