N. Jiang, W. Pan, L. S. Yan, B. Luo, S. Y. Xiang, L. Yang, D. Zheng and N. Q. Li, “Chaos Synchronization and Communication in Multiple Time-Delayed Coupling Semiconductor Lasers Driven by a Third Laser,” IEEE Journal of Selected Topics in Quantum Electronics, Vol. 17, 2011, pp. 1220-1227.
 G. Yuan and S. Yu, “Bistability and Switching Properties of Semiconductor Ring Lasers With External Optical Injection,” IEEE Journal of Quantum Electronics, Vol. 44, 2008, pp. 41-48. doi:10.1109/JQE.2007.909523