@article{6282, author = {T. Dekorsy and V. A. Yakovlev and W. Seidel and M. Helm and F. Keilmann}, title = {Infrared-phonon-polariton resonance of the nonlinear susceptibility in GaAs}, year = {2003}, journal = {Physical Review Letters}, volume = {90}, number = {5}, month = {Feb}, isbn = {0031-9007}, url = {://000180918300034 }, language = {eng}, }