Princeton Univ. Press. 1992. NealKoblitz. Introduction to Elliptic Curves and Modular Forms. Springer. 1984. NealKoblitz. Chapter 6. A Course in Number
American Mathematical Society. 1995. ISBN 9780821802779. (translated by NealKoblitz from Russian original, published Nauka, Moscow 1990) Introduction to
ISBN 978-0-387-90272-2) p-adic Numbers, p-adic Analysis, and Zeta-Functions, NealKoblitz (1984, 2nd ed., ISBN 978-0-387-96017-3) Cyclotomic Fields, Serge Lang