| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Variable Star Research: An International Perspective. Proceedings of the first European meeting of the American Association of Variable Star Observes: 'International Cooperation and Coordination in Variable Star Research. Brussels Belgium 24-28 July, 1990 | 978-O-521-4O469-3 (O-521-4O469-X) |