@article{PismaZhETF.48.54,
    title = {Quantum correlations in the optical characteristics of low-temperature $H\downarrow$ and $D\downarrow$  gases},
    author = {Kagan, Yu. and Svistunov, B. V. and Shlyapnikov, G. V.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {48},
    issue = {2},
    pages = {54},
    year = {1988},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_16638.shtml},
}