S. Saxena, P. K. A. Wai, C. R. Menyuk, and M. Chbat, "Analysis of a soliton-based logic module for a ring network,"
in Conference on Lasers and Electro-Optics, T. Deutsch, J. Goldsmith, D. Killinger, and G. Valley, eds.,
Vol. 15 of OSA Technical Digest
(Optical Society of America, 1995), paper CME4.