| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Universe Alternatives: Emerging Concepts of Size, Age, Structure and Behavior | 978-0-9649983-4-6 (0-9649983-4-3) | 1997 | |
| Universe Alternatives: Emerging Concepts of Size, Age, Structure and Behavior | 978-0-9649983-3-9 (0-9649983-3-5) | 1996 | B.L. Falmer |