| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) | |
|---|---|---|---|---|
| Applied Mathematics: Body and Soul | 978-3-540-40467-5 (3-540-40467-8) | 2003 | Kenneth Eriksson · Claes Johnson | |
| Billy's Christmas Tree | 978-0-02-688790-8 (0-02-688790-8) | 1988 | ||
| Santa's Surprise | 978-0-02-688792-2 (0-02-688792-4) | 1988 | ||