@other{https://resolver.caltech.edu/CaltechETD:etd-10122006-081036, title = "Phase conjugate optics : on the theory, observation, and utilization of temporallly-reversed wavefronts as generated via nonlinear optical parametric interactions", year = "1980", url = "https://resolver.caltech.edu/CaltechETD:etd-10122006-081036", id = "record", doi = "10.7907/03GZ-7C28" }