Andresscu, Titu. Gelca, Razvan.
Mathematical Olympiad Challenges - Boston Birkhauser 2000 - 260
3 7643 4155 6
Mathematics - Problems, exercises, etc.
51 AND
Mathematical Olympiad Challenges - Boston Birkhauser 2000 - 260
3 7643 4155 6
Mathematics - Problems, exercises, etc.
51 AND