| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Molecular Electronics: 4th Intl School on Condensed Matter Physics: Varna, Bulgaria Sept 18-27, 1986 | 978-9971-5-0201-0 (9971-5-0201-1) | 1987 |
| Nonlinear Phenomena in Solids-Modern Topics | 978-9971-966-72-0 (9971-966-72-7) | 1985 |