@article{DAN_1974_215_1_a12,
     author = {V. G. Kravchenko and A. M. Nikolaichuk},
     title = {On partial indices of the {Riemann} problem for two pairs of functions},
     journal = {Doklady Akademii Nauk},
     pages = {53--56},
     publisher = {mathdoc},
     volume = {215},
     number = {1},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1974_215_1_a12/}
}