@article{DAN_1966_167_2_a0,
     author = {A. D. Alekseev},
     title = {On a case of a discontinuous {Riemann} problem},
     journal = {Doklady Akademii Nauk},
     pages = {255--258},
     publisher = {mathdoc},
     volume = {167},
     number = {2},
     year = {1966},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1966_167_2_a0/}
}