@article{PismaZhETF.51.320,
    title = {Stability of the ground state of ordered dimers of the t-J model},
    author = {Markelov, A. V.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {51},
    issue = {6},
    pages = {320},
    year = {1990},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_17262.shtml},
}