Economica is an international journal devoted to research in all branches of economics. Theoretical and empirical articles are published from all parts of the international research community. Economica is a leading economics journal, appearing high in the published citation rankings. In addition to the main papers which make up each issue, there is an extensive review section, covering a wide range of recently published titles at all levels. From time to time special issues on selected topics are published, and are available as either single back issues or, if published in the current year, are included in the annual subscription. JSTOR provides a digital archive of the print version of Economica. The electronic version of Economica is available at http://www.interscience.wiley.com. Authorized users may be able to access the full text articles at this site.