| title | ISBN-13 | year of publication |
|---|---|---|
| Rー16 3 Rー16 3 | 978-4-06-346231-9 | 2003 |
| Rー16 4 Rー16 4 | 978-4-06-346248-7 | 2004 |
| Rー16 5 Rー16 5 | 978-4-06-346275-3 | 2004 |
| Rー16 6 Rー16 6 | 978-4-06-361353-7 | 2005 |
| Rー16 7 Rー16 7 | 978-4-06-361385-8 | 2005 |
| Rー16 8 Rー16 8 | 978-4-06-361435-0 | 2006 |
| Rー16 9 Rー16 9 | 978-4-06-361474-9 | 2006 |