@article{PismaZhETF.52.1103,
    title = {Nematic state in an exchange Heisenberg Hamiltonian},
    author = {Gor'kov, L. P. and Sokol, A. V.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {52},
    issue = {9},
    pages = {1103},
    year = {1990},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_17547.shtml},
}