@article{DAN_1968_181_6_a8,
     author = {G. I. Marchuk and Yu. A. Kuznetsov},
     title = {On the question of optimal iteration processes},
     journal = {Doklady Akademii Nauk},
     pages = {1331--1334},
     publisher = {mathdoc},
     volume = {181},
     number = {6},
     year = {1968},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1968_181_6_a8/}
}