@article{53, author = {S. Kraut and N. Nuttall and Dana Anderson}, title = {Photorefractive two-beam coupling equations with multiple spatial-temporal features: an SVD approach}, year = {1999}, journal = {Applied Physics B: Lasers and Optics}, volume = {68}, pages = {937-945}, month = {1999-05}, issn = {0946-2171}, doi = {10.1007/s003400050727}, }