Dover Publications · W. H. Freeman
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| The USSR Olympiad Problem Book | 978-0-7167-0412-6 (0-7167-0412-9) | 1962 | |
| The USSR Olympiad Problem Book: Selected Problems and Theorems of Elementary Mathematics | 978-0-486-27709-7 (0-486-27709-7) | 1993 | N. N. Chentzov · I. M. Yaglom |