@article{JETPL.114.560,
    title = {On the Possibility of a Significant Increase in the Storage Time of Ultracold Neutrons in Traps Coated with a Liquid Helium Film},
    author = {Grigoriev, P. D. and Dyugaev, A. M. and Mogilyuk, T. I. and Grigoriev, A. D.},
    journal = {JETP Lett.},
    volume = {114},
    issue = {8},
    pages = {493},
    year = {2021},
    doi = {10.1134/S0021364021200078},
    url = {http://jetpletters.ru/ps/dx/10.31857/S1234567821200106},
    note = {[Pisma v ZhETF 114, 560 (2021)]}
}