R. G. Batchko, T. Alfrey, R. Roussev, M. H. Sher, S. S. Kim, and L. R. Marshall, "All-Optical Wavelength Conversion in MgO:LiNbO3 and LiNbO3: A study of Photorefraction,"
in Advanced Solid-State Lasers, M. Fermann and L. Marshall, eds.,
Vol. 68 of Trends in Optics and Photonics Series
(Optical Society of America, 2002), paper PD5.