@article{PismaZhETF.55.407,
    title = {Coherence effect in the photoproduction of symmetric $e^+e^-$ pairs in germanium and silicon crystals},
    author = {Andreyashkin, M. Yu. and Basai, A. Yu. and Vorob'ev, S. A. and Zabaev, V. N. and Kalinin, B. N. and Kunashenko, Yu. P. and Pivovarov, Yu. L.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {55},
    issue = {7},
    pages = {407},
    year = {1992},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_19274.shtml},
}