A new approach for estimating oligopoly power coefficients is proposed. The methodology used sidesteps the difficulties of obtaining cost data and obtaining coefficients which do not satisfy the theoretical properties of the cost function.

This study proposes a linear two-stage approach to derive prices of observations when reported consumption is zero. In the first stage, demand equations are estimated using an ad hoc filling of unobserved prices. Then, each estimated demand equation is solved for price and a numerical estimate...

An approach is offered that lets data determine the exact location of seasonal cycles. Rather than use deterministic variables that define the season, it allows seasonal cycles to be identified and modelled as dictated by the data in demand modelling framework.