@article{PismaZhETF.28.386,
    title = {Nuclear gamma resonance on $Fe^{57}$ nuclei on copper grain boundaries},
    author = {Kaigorodov, V. N. and Klotsman, S. M.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {28},
    issue = {6},
    pages = {386},
    year = {1978},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_24169.shtml},
}