TY  - BOOK
AU  - Nandi,Mrinal
AU  - Gupta,Sourav Sen
TI  - Hexas: : handbook for mathematical Olympiads 
SN  - 9789383420292
U1  - 510 
PY  - 2014///
CY  - Kolkata
PB  - Academic publishers
N1  - Includes  index
ER  -