@article{escidoc:2353709, title = {Fluctuational electrodynamics for nonlinear media}, author = {Soo, Heino and Kr\"uger, Matthias}, journal = {EPL}, volume = {115}, number = {4}, publisher = {EDP Science}, address = {Les-Ulis}, year = {2016}, doi = {10.1209/0295-5075/115/41002} }