@article{DAN_1963_152_5_a5,
     author = {A. E. Gel'man},
     title = {Simple solutions of operator equations in the case of branching},
     journal = {Doklady Akademii Nauk},
     pages = {1042--1044},
     publisher = {mathdoc},
     volume = {152},
     number = {5},
     year = {1963},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1963_152_5_a5/}
}