@article{PismaZhETF.94.710,
    title = {Quantum magnets with large single-ion easy-plane anisotropy in magnetic field},
    author = {Sizanov, A. V. and Syromyatnikov, A. V.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {94},
    issue = {8},
    pages = {710},
    year = {2011},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_29567.shtml},
}