@article{DAN_1968_182_4_a0,
     author = {V. S. Buslaev},
     title = {A trace formula in geodesic theory},
     journal = {Doklady Akademii Nauk},
     pages = {743--746},
     publisher = {mathdoc},
     volume = {182},
     number = {4},
     year = {1968},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1968_182_4_a0/}
}