TY  - BOOK
AU  - Andreescu,Titu
AU  - Gelca,Razvan
TI  - Mathematical olympiad challenges
SN  - 9780817645281
AV  - QA43  .A524 2009
PY  - 2009///
CY  - New York
PB  - Springer
KW  - Mathematics
KW  - Problems, exercises, etc
ER  -