@article{TMF_1989_81_3_a7,
     author = {B. M. Letfulov},
     title = {Feromagnetism in~the single-band {Hubbard} model in~the limit of~strong correlations},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {434--440},
     publisher = {mathdoc},
     volume = {81},
     number = {3},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1989_81_3_a7/}
}