TY  - BOOK
AU  - Niven, Ivan
AU  - Niven, Ivan
AU  - Zuckerman,  Herbert S. 
AU  -  Montgomery,  Hugh L. 
TI  - Introduction to the theory of numbers.- 5th ed
SN  - 978-81-265-1811-1
PY  - 1960///
CY  - New Delhi
PB  - Wiley 
KW  - Number theory
ER  -