@article{DAN_1994_336_2_a6,
     author = {E. L. Korotyaev},
     title = {Wave propagation in a one-dimensional periodic medium},
     journal = {Doklady Akademii Nauk},
     pages = {171--174},
     publisher = {mathdoc},
     volume = {336},
     number = {2},
     year = {1994},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1994_336_2_a6/}
}