In this paper we examine how to account for growth when new inputs are being created. In particular, we obtain a decomposition of growth into that due to a higher quantity of existing inputs, and that due to a greater range of inputs. This decomposition is first obtained for a single firm, with...

In this paper we show that when a monopolist incurs certain costs for servicing or maintaining its customer-base, price markups may decrease with high demand mdash; i.e. markups are countercylical. Indeed, for a given market share when demand booms each customer on average will purchase more...