Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
This short essay introduces a special issue of The Journal of Industrial Economics on vertical relationships, including both vertical integration and vertical restraints. In the last few years, there has been a resurgence of theoretical and empirical work on vertical relationships, and they are central to major current issues in industrial policy. In this introduction, the authors briefly describe the contribution by the papers that make up this special issue. Copyright 1991 by Blackwell Publishing Ltd.