1. A. K. Lenstra, H. W. Lenstra, M. S. Manasse, and J. M. Pollard, The number field sieve, Vol. 1554 of Lecture Notes in Mathematics, 11–42, Springer Verlag, 1993.
2. Lect Notes Comput Sci;C. Pomerance,1985
3. Hermann J. J. te Riele, email announcement, February 4 1999, available at
http://jya.com/rsa140.htm
.