TY  - BOOK
AU  - Chakraborty, S.K
AU  - Sarkar,B.K
TI  - Discrete mathematics
T2  - Oxford higher education
SN  - 9780198065432
U1  - 511 
PY  - 2011///
CY  - New York
PB  - Oxford University Press
N1  - includes bibilography and index
ER  -