Stability of Equilibria with Externalities
证明，在同时存在正负外部性的一类模型中，所有稳态均衡对扰动都是局部稳定的，存在完美预见路径回到均衡，从而推翻了Liviatan-Samuelson的结论。
It is shown that, in a class of models with multiple externalities (one positive and one negative), all stationary equilibria may be locally stable to perturbations, in the sense that there exist perfect foresight trajectories leading back to the equilibrium. Thus, scale diseconomies (arising, for example, out of a common resource pool) generally overturn the Liviatan-Samuelson result, that equilibria are either saddlepoints or sources.