@article{DAN_1968_181_4_a16,
     author = {N. N. Rosanov and A. V. Tulub},
     title = {Perturbation theory for polarization in resonance media},
     journal = {Doklady Akademii Nauk},
     pages = {830--832},
     publisher = {mathdoc},
     volume = {181},
     number = {4},
     year = {1968},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1968_181_4_a16/}
}