Choi, DeSarbo and Harker (1990) have recently proposed a numerical methodology for optimal product positioning and pricing under the assumption that the incumbents react only with price changes in the short run. The current note extends this methodology to include incumbents' long-run strategy...

The recent global recession has revealed the vital importance of service-sector productivity in all developed economies. The challenge for scholars and professionals in productivity management (economics and management science) in the coming decade is clearly to improve the productivity of the...

A New Look at Spatially Competitive Facility Location Models -- A Spatial Nash Equilibrium Model -- Investigating the Use of the Core as a Solution Concept in Spatial Price Equilibrium Games -- Computational Aspects of the International Coal Trade Model -- Demand Homotopies for Computing...