Baras, S.T., Voitsekhovska, O.V. and Shcherbatiuk, H.M. 2019. Frequency Fluctuations of the Doppler Signal. Visnyk of Vinnytsia Politechnical Institute. 4 (Aug. 2019), 94–99. DOI:https://doi.org/10.31649/1997-9266-2019-145-4-94-99.