1. What is X3D. http://www.web3d.org/x3d/what-x3d. Accessed: 2016-02-16.
2. Peter Paulis. 3d webpages.Študentská vedecká konferencia, FMFI UK, Bratislava, pages 316--327, 2010.
3. Oak3D. http://www.effecthub.com/t/oak3d. Accessed: 2016-02-16.
4. WebGL - OpenGL ES 2.0 for the web. https://www.khronos.org/webgl/. Accessed: 2016-02-16.
5. Linden lab - second life. http://secondlife.com/. Accessed: 2015-11-05.