TY  - BOOK
AU  - Dorichenko,Sergey
AU  - Shubin,Tatiana
TI  - Moscow math circle : : week-by-week problem sets 
T2  - MSRI mathematical circles library
SN  - 9788173719936
U1  - 510 
PY  - 2012///
CY  - Hyderabad
PB  - Universities Press
KW  - Mathematics.
ER  -