@article{PismaZhETF.41.533,
    title = {Decay of a high-energy pion beam in a medium: Formation of a decay channel},
    author = {Askar'yan, G. A.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {41},
    issue = {12},
    pages = {533},
    year = {1985},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_22426.shtml},
}