Tariff literature on third-degree price discrimination remains only lightly explored. The purpose of the paper is to investigate whether there exist optimum tariffs in the presence of different demand elasticities. We explore (i) the case of optimum uniform ad valorem tariff, and (ii) the case...

This paper improves upon the existing literature surrounding the production order quantity inventory model in which unit cost and daily production are assumed to be constant. By including economies of scale into the model, we examine its impact on production order quantity and total cost. The...

Applying sector stock prices and oil prices in 1991:01–2009:05 from the G7 countries we find oil price shocks do not significantly impact the composite index in each country. However, stock price changes in Germany, the UK and the US were found to lead oil price changes.