R. Guha, R. Kumar, P. Raghavan, and A. Tomkins. Proceedings of the 13th International Conference on World Wide Web, page 403--412. New York, NY, USA, ACM, (2004)
K. Boehringer, and O. Hess. Numerical Simulation of Optoelectronic Devices, 2005. NUSOD '05. Proceedings of the 5th International Conference on, (2005)