This paper presents a methodology for identifying groups of products that exhibit similar patterns in demand and responsiveness to changes in price using store-level sales data. We use the concept of economic separability as the basis for establishing similarity between products, and build a...

This article is intended to be a practical user guide to help assess their rebates' capability to foreclose. It first discusses how firms can assess whether their practices are capable of restricting competition. It then reviews the most important issues that are open as to the way the...