[1]
D. S. RAKOV, A. S. RAKOV, Y. A. CHURSIN, V. V. PAVLICHEV, and A. O. IGUMNOV, “High-Directional Sound Propagation Over the Earth’s Surface”, Arch. Acoust., vol. 45, no. 4, pp. 747–752, Nov. 2020, doi: 10.24425/aoa.2020.135280.