@article{DAN_1985_283_2_a2,
     author = {E. A. Volkov},
     title = {On methods of solving difference equations for a piecewise homogeneous medium, and with right side given along a curve},
     journal = {Doklady Akademii Nauk},
     pages = {274--277},
     publisher = {mathdoc},
     volume = {283},
     number = {2},
     year = {1985},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1985_283_2_a2/}
}