| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| LEWIS CARROLL EN EL PAIS DE LOS NUMEROS | 978-84-7506-877-0 (84-7506-877-4) | 2009 |
| Sudoku Lösungsbuch | 978-3-8289-2150-4 (3-8289-2150-7) | 2006 |
Robin Wilson · Tim Wilson, Robin Akert Elliot Aronson · W R. · Wilson R. · Wilson Robin J · Wilson Trevor Prior Robin