Dr Krzysztof Walczak participated in two international conferences: The 13th International Symposium on Web 3D Technology Web3D'08 (August 9-10, 2008) and The 35th SIGGRAPH Conference on Computer Graphics and Interactive Techniques (August 11-15, 2008). The conferences took place in Los Angeles, California, USA. During the Web3D'08 conference Dr Walczak presented a paper entitled Structured Design of Interactive VR Applications.

More about Web3D 2008: http://www.web3d.org/conferences/web3d2008/

More about SIGGRAPH 2008: http://www.siggraph.org/s2008/