@article{PismaZhETF.85.102,
    title = {Entanglement in a Two-Boson Coupled System},
    author = {Chizhov, A. V.},
    journal = {Письма в ЖЭТФ},
    volume = {85},
    issue = {1},
    pages = {102},
    year = {2007},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_16365.shtml},
}