Power indices of spanning connectivity games

In AAIM 2009 conference which is being held in San Francisco, one of my co-authors will be presenting our paper in the game theory session. The title of the paper is "Power indices of spanning connectivity games" and is joint work with O. Lachish, M. Paterson and R. Savani.
We consider a simple coalitional game called the spanning connectivity game (SCG) based on an undirected, unweighted multigraph, where edges are players. We examine the computational Complexity of computing the voting power indices of edges in the SCG.

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