Credible Commitments: Further Remarks
区分单边与双边贸易关系，通过展示净收益关系确认互惠贸易的最优性，并指出在单边贸易中使用不可回收资产作为抵押品时的一个先前未被注意的复杂问题。
I distinguish between unilateral and bilateral trading relations in an earlier article in this Review (1983) in which I examined the use of hostages (or their commercial equivalents) to support exchange. The purposes of this note are 1) to confirm the optimality of reciprocal trading by explicitly displaying the combined net benefit relations, and 2) to acknowledge a previously unremarked complication that arises when nonsalvageable assets are used as hostages in a unilateral trade.