DuMont Reiseverlag, Ostfildern · Wydawnictwo Naukowe UAM
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Polen. Kunst- Reiseführer | 978-3-7701-2023-9 (3-7701-2023-X) | 1999 | Ivan Bentchev · Michaela Marek |
| The Method of Socratic Proofs for Normal Modal Propositional Logics | 978-83-232-1811-1 (83-232-1811-0) | 2007 | |