@article{DAN_1968_178_6_a15,
     author = {A. S. Davydov and V. A. Onischuk},
     title = {Dielectric constant of crystals with allowance for delayed interaction},
     journal = {Doklady Akademii Nauk},
     pages = {1285--1288},
     publisher = {mathdoc},
     volume = {178},
     number = {6},
     year = {1968},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1968_178_6_a15/}
}