| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Determining the Competitive Structure of Product-Markets: Practices, Issues, and Suggestions | 978-99928-0-265-6 (99928-0-265-0) | 1990 | David W. Stewart · Anthony J. Zahorik |
| Identifying Competitive Product-Market Boundaries: Strategic and Analytical Issues | 978-99927-999-3-2 (99927-999-3-5) | 1976 | George S. Day |