@InProceedings{KoTs92,
  author = 	 {K. Koyama and Y. Tsuruoka},
  title = 	 {Speeding up elliptic cryptosystems by using a signed
                  binary window method},
  volume =	 740,
  series =	 LNCS,
  pages =	 {345--357},
  Booktitle =	 {Advances in Cryptology -- CRYPTO '92},
  editor =	 {Ernest F. Brickell},
  year =	 1992,
  publisher =	 {Springer-Verlag},
  note =	 {12th Annual International Cryptology Conference,
                  Santa Barbara, California, USA, August 16--20, 1992,
                  Proceedings}
}