TY  - BOOK
AU  - Andreescu, Titu
AU  - Andrica, Dorin
TI  - Number theory: structures, examples and problems
SN  - 9780817632458
U1  - 512.7 
PY  - 2009///
CY  - Boston
PB  - Birkhauser
KW  - Number theory
ER  -