@article{PismaZhETF.52.999,
    title = {New representation of the Hubbard model},
    author = {Khaliullin, G. G.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {52},
    issue = {7},
    pages = {999},
    year = {1990},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_17519.shtml},
}