Jill Ostrowski · Joel Oestreich · Julia Oesterreich · Julia Osterhoff
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Making Problems, Creating Solutions: Challenging Young Mathematician | 978-1-57110-041-2 (1-57110-041-5) | 1998 |
| Room With a Different View, A | 978-1-57110-009-2 (1-57110-009-1) | 1995 |