@article{DAN_1970_193_2_a0,
     author = {Ya. I. Al'ber},
     title = {Solution of nonlinear operator equations by steepest descent type methods},
     journal = {Doklady Akademii Nauk},
     pages = {255--258},
     publisher = {mathdoc},
     volume = {193},
     number = {2},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1970_193_2_a0/}
}