Niven I., Zuckerman H.S. and Montgomery H. L., An Introduction to the Theory of Numbers, John Wiley and Sons.
Niven I., Zuckerman H.S. and Montgomery H. L., An Introduction to the Theory of Numbers, John Wiley and Sons.
Niven I., Zuckerman H.S. and Montgomery H. L., An Introduction to the Theory of Numbers, John Wiley and Sons.