TY  - BOOK
AU  - Andreescu Titi
AU  - Andrica Dorin
TI  - Number theory: structures, examples, and problems
SN  - 978-0-8176-3245-8
U1  - 512.7 
PY  - 2009///
CY  - Boston
PB  - Birkhauser
KW  - Number theory
ER  -