Higher-Order Correlations and Semiconductor Optical Nonlinearities
T. Meier, H.M. Gibbs, G. Khitrova, C. Ell, R. Binder, W. Hoyer, M. Kira, S.W. Koch, C. Sieh, in: Nonlinear Optics: Materials, Fundamentals and Applications, Optical Society of America, 2002.