@article{JETPL.113.655,
    title = {Generation Spectrum of Long-Pulse Free-Electron Terahertz Lasers: Quasilinear Theory},
    author = {Ginzburg, N. S. and Kocharovskaya, E. R. and Sergeev, A. S. and Fil?chenkov, S. E.},
    journal = {JETP Lett.},
    volume = {113},
    issue = {10},
    pages = {626},
    year = {2021},
    doi = {10.1134/S0021364021100076},
    url = {http://jetpletters.ru/ps/dx/10.31857/S1234567821100049},
    note = {[Pisma v ZhETF 113, 655 (2021)]}
}