@article{DAN_1960_131_4_a21,
     author = {M. S. Livshits},
     title = {A mathematical problem connected with the theory of lengthwise polarized light},
     journal = {Doklady Akademii Nauk},
     pages = {797--800},
     year = {1960},
     volume = {131},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1960_131_4_a21/}
}