@article{PismaZhETF.78.1293,
    title = {Topological phase separation  in 2D hard-core Bose--Hubbard system away from half-filling},
    author = {Moskvin, A. S. and Bostrem, I. G. and Ovchinnikov, A. S.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {78},
    issue = {12},
    pages = {1293},
    year = {2003},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_1945.shtml},
}