@article{JETPL.117.264,
    title = {Manifestation of Memory and Butterfly in the Photon Echo on Erbium Ions in LuLiF4 and YLiF4},
    author = {Shegeda, A. M. and Korableva, S. L. and Morozov, O. A. and Lisin, V. N. and Solovarov, N. K. and Tarasov, V. F.},
    journal = {JETP Lett.},
    volume = {117},
    issue = {4},
    pages = {267},
    year = {2023},
    doi = {10.1134/S0021364022603347},
    url = {http://jetpletters.ru/ps/dx/10.31857/S1234567823040043},
    note = {[Pisma v ZhETF 117, 264 (2023)]}
}