@article{PismaZhETF.59.728,
    title = {Is it possible to produce next generation of UCN sources with density $10^3 - 10^4 cm^{-3}$},
    author = {Serebrov, A. P. and Mityukhlyaev, V. A. and Zakharov, A. A. and Nesvizhevsky, V. V. and Kharitonov, A. G.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {59},
    issue = {11},
    pages = {728},
    year = {1994},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_5211.shtml},
}