| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Esop 88: 2nd European Symposium on Programming | 978-0-387-19027-3 (0-387-19027-9) | 1988 |
| Programs As Data Objects: Proceedings of a Workshop, Copenhagen, Denmark, Oct 17-19, 1985 | 978-0-387-16446-5 (0-387-16446-4) | 1986 |