@article{Gavrilov2026critical, author={Gavrilov, N.M. and Kshevetskii, S.P. and Koval, A.V. and Kurdyaeva, Y.A.}, title={Critical level influence on the spectra of secondary gravity waves in the middle and upper atmosphere}, journal={Solar-Terrestrial Physics}, publisher={INFRA-M Academic Publishing LLC.}, year={2026}, pages={105-113}, volume={12}, issue={1}, }