D. B. Shire, M. A. Parker, and C. L. Tang, "Optical Instability and NOR-Gate Operation In Intracavfty-Coupled In-Plane and Vertical Cavity Surface Emitting Lasers,"
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 CPD2.