| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Mfdbs 91: 3rd Symposium on Mathematical Fundamentals of Database and Knowledge Based Systems, Rostock, Germany, May 6-9, 1991: Proceedings | 978-O-387-54OO9-2 (O-387-54OO9-1) | 1991 | J. Demetrovics |