1. D.H.Lehmer and R.E.Powers. On Factoring Large numbers. Bulletin of the American Mathematical Society. ISSN 1088-9485.1931. D.H.Lehmer and R.E.Powers. On Factoring Large numbers. Bulletin of the American Mathematical Society. ISSN 1088-9485.1931.
2. Richard Crandall and Carl Pomerance Prime Numbers : A Computational Perspective . Springer . ISBN 0-387-94777-9. Chapter 5: Exponential Factoring Algorithms, pp. 191–226. Chapter 6: Subexponential Factoring Algorithms, pp. 227–284. Section 7.4: Elliptic curve method, pp. 301–313,2001. Richard Crandall and Carl Pomerance Prime Numbers: A Computational Perspective. Springer. ISBN 0-387-94777-9. Chapter 5: Exponential Factoring Algorithms, pp. 191–226. Chapter 6: Subexponential Factoring Algorithms, pp. 227–284. Section 7.4: Elliptic curve method, pp. 301–313,2001.
3. A method for obtaining digital signatures and public-key cryptosystems