Collaborative Network Formation in Spatial Oligopolies
  Recently, it has been shown that networks with an arbitrary degree sequence may be a stable solution to a network formation game. Further, in recent years there has been a rise in the number of firms participating in collaborative efforts. In this paper, we show conditions under which a graph with an arbitrary degree sequence is admitted as a stable firm collaboration graph. 
Shaun Lichter, Terry Friesz, Christopher Griffin
math.OC cs.SY