In this note we reconsider the paper of Zhang and Zhang (1997), published in Managerial and Decision Economics, who analyze a strategic delegation model with R&D spillovers in an imperfectly competitive market. We were motivated to study their setup by a puzzling result given in their paper:...

The need for the management accounting system (MAS) to support marketing decisions has been identified in literature and practice. Accordingly, several improvements have been suggested with the main intention of providing more detailed information on marketing segments. Yet, even with respect to...