@article{PismaZhETF.68.663,
    title = {Ultra cold neutrons cooling during its long dwelling in a trap},
    author = {Bondarenko, L. and Geltenbort, P. and Korobkina, E. and Morozov, V. and Panin, Yu. and Steyerl, A.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {68},
    issue = {9},
    pages = {663},
    year = {1998},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_14778.shtml},
}