English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Open

Presents the pdf analysis as premium feature

PDF Analysis

Insights

Presents the summarisation as premium feature

Summarisation

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

Retail and wholesale gasoline prices vary over time and across geographic locations due to differences in government policies and other factors that affect demand, costs, and market power.  We use a two-equation, reduced-form model to determine the relative importance of these various factors using panel data for 48 states over nine years.  We find that the variation in the price of crude oil has been virtually the only major factor contributing to gasoline price variations during the 1990s.  Tax variations and mergers contribute substantially more to geographic price differentials than do price discrimination, cost factors, or pollution controls.

Gasoline Price Differences: Taxes, Pollution Regulations, Mergers, Market Power, and Market Conditions