| title | ISBN-13 | year of publication |
|---|---|---|
| Line and Circle | 978-1-84444-006-1 | 2003 |
| Line and Circle | 978-1-84444-011-5 | 2003 |
| Line and Circle | 978-1-84444-016-0 | 2003 |
| Line and Circle | 978-1-84444-017-7 | 2003 |
| Line and Circle | 978-1-84444-019-1 | 2003 |
| Line and Circle | 978-1-84444-020-7 | 2003 |
| Line and Circle | 978-1-84444-021-4 | 2003 |