| Olympiad Problems from all over the World. 8th Grade Content - Dumitru M. Batinetu-Giurgiu, Marin Chirciu, Octavian Stroe, Daniel Sitaru • librariadelfin.ro | 60.89 RON |
| Olympiad Problems from all over the World. 8th Grade Content • librarie.net | 62.10 RON |
Marin Chirciu