We present and test an explanation for lags in the adjustment of wholesale gasoline prices to changes in crude oil prices. Our simple model with costly adjustment of production and inventories implies that output prices will respond with a lag to cost shocks even in the absence of menu costs,...

In many recent antitrust cases, manufacturers of complex high- technology equipment have been accused of exercising market power in the sale of proprietary service or parts necessary to maintain the machines they produce. The manufacturer generally concedes that it has market power in selling...