@article{DAN_1993_332_3_a5,
     author = {V. V. Ostapenko},
     title = {A method for reconstructing a difference operator in divergence},
     journal = {Doklady Akademii Nauk},
     pages = {291--293},
     publisher = {mathdoc},
     volume = {332},
     number = {3},
     year = {1993},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1993_332_3_a5/}
}