@article{DAN_1991_316_5_a19,
     author = {N. N. Bogolyubov and V. A. Moskalenko},
     title = {Superconducting state of {Hubbard} model},
     journal = {Doklady Akademii Nauk},
     pages = {1107--1111},
     publisher = {mathdoc},
     volume = {316},
     number = {5},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1991_316_5_a19/}
}