@article{MZM_1989_46_5_a4,
     author = {V. V. Kucherenko and G. A. Trunov},
     title = {Convergence rate of the methods of approximate factorization},
     journal = {Matemati\v{c}eskie zametki},
     pages = {29--39},
     publisher = {mathdoc},
     volume = {46},
     number = {5},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1989_46_5_a4/}
}