@article{AA_1997_9_3_a9,
     author = {N. V. Krylov},
     title = {On the rate of convergence of finite-difference
},
     journal = {Algebra i analiz},
     pages = {245--256},
     publisher = {mathdoc},
     volume = {9},
     number = {3},
     year = {1997},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AA_1997_9_3_a9/}
}