@article{TMF_1990_82_3_a9,
     author = {M. I. Vladimir and V. A. Moskalenko},
     title = {Diagram technique for the {Hubbard} model},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {428--437},
     publisher = {mathdoc},
     volume = {82},
     number = {3},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1990_82_3_a9/}
}