@article{TMF_1984_59_2_a11,
     author = {A. V. Vedyaev and M. Yu. Nikolaev},
     title = {Aspects of the diagram technique for {Hubbard} operators},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {293--296},
     year = {1984},
     volume = {59},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1984_59_2_a11/}
}