@article{PismaZhETF.30.306,
    title = {Neutron-optical image obtained by using ultracold neutrons},
    author = {Kashukeev, N. T. and Chikov, N. F.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {30},
    issue = {5},
    pages = {306},
    year = {1979},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_21752.shtml},
}