The purpose of this paper is to test the nature of competition concerning price and capacity setting in the Norwegian airline industry after its deregulation in 1994. Did the two airlines, SAS and Braathens, compete on prices and capacities (competition), collude on prices and capacities...

The relative performance between seasons in a fishery is tested empirically. In particular, the importance of a stochastic environment-what may be denoted as fishing luck in a fishery-is established by applying Dickey-Fuller unit-root tests for the efficiency scores of vessels between seasons....