@article{PismaZhETF.53.217,
    title = {Resonant forward nuclear scattering of $\gamma$ rays after a stepped change in the energy of an excited nuclear state},
    author = {Shvyd'ko, Yu. V. and Popov, S. L. and Smirnov, G. V.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {53},
    issue = {4},
    pages = {217},
    year = {1991},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_17394.shtml},
}