@article{DAN_1961_140_4_a14,
     author = {I. S. Gorban' and V. B. Timofeev},
     title = {Complex refraction in single cuprous oxide crystals},
     journal = {Doklady Akademii Nauk},
     pages = {791--793},
     publisher = {mathdoc},
     volume = {140},
     number = {4},
     year = {1961},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1961_140_4_a14/}
}