@article{DAN_1960_130_2_a14,
     author = {L. A. Khalfin},
     title = {A new form of dispersion relations},
     journal = {Doklady Akademii Nauk},
     pages = {299--302},
     year = {1960},
     volume = {130},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1960_130_2_a14/}
}