Viva means PhD thesis defence. And I passed it this afternoon.

December 2010 Update: A proper reference is provide here:
http://portal.acm.org/citation.cfm?id=1666968.1666995&coll=&dl=
Here is the Latex code:
@article{1666995,
author = {Ruan, Ji and van der Hoek, Wiebe and Wooldridge, Michael},
title = {Verification of Games in the Game Description Language},
journal = {J. Log. and Comput.},
volume = {19},
number = {6},
year = {2009},
issn = {0955-792X},
pages = [...]

This is a joint work with Professor Jan van Eijck(CWI, Netherlands), and Tomasz Sadzik(Stanford, USA). It was presented in Games, action and social software Workshop , 30 Oct – 3 Nov 2006 @ Lorentz Center, Leiden, the Netherlands.
A pre-publication version is open for download: Action Emulation.
Abstract:
The effects of public announcements, private communications, deceptive messages [...]