M. D. Skeldon, P. Narum, and R. W. Boyd, in Nonlinear Optics and Applications (International Society for Optics and Photonics, 1986), pp. 93-100.
[Link]M. D. Skeldon, P. Narum, and R. W. Boyd, in Nonlinear Optics and Applications (International Society for Optics and Photonics, 1986), pp. 93-100.
[Link]