1. I. F. Blake, G. Seroussi, and N. Smart, Elliptic Curves in Cryptography, Cambridge University Press, (1999).
2. J. Cilleruelo, J. Rue, P. Sarka, and A. Zumalacarregui, The least common multiple of sets of positive integers, ArXiv e-prints arXiv:1112.3013v1 [math.NT], (2011).
3. Compaq. Cryptography Using Compaq MultiPrime Technology in a Parallel Processing Environment, Compaq, (2000).
4. http://www.crypto-world.com/FactorRecords.html.
5. J. H. Ellis, The story of non-secret encryption, Available from http://cryptome.org/jya/ellisdoc.htm, (1997).