@article{DAN_1994_336_3_a4,
     author = {A. A. Arsen'ev},
     title = {On the behavior of reflection and transmission coefficients near},
     journal = {Doklady Akademii Nauk},
     pages = {307--308},
     publisher = {mathdoc},
     volume = {336},
     number = {3},
     year = {1994},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1994_336_3_a4/}
}