1. R. Z. Syunyaev, R. Z. Safieva, and R. R. Safin, J. Pet. Sci. Eng. 26, 31 (2000).
2. M. S. Mullakaev, Ultrasonic Intensification for Oil Extraction and Processing, Oil Polluted Water Purification and Oil Slime Processing (History, Economics and Law Research Institute, Moscow, 2019) [in Russian].
3. O V. Abramov, V. O. Abramov, M. S. Mullakaev, and V. V. Artem’ev, Acoust. Phys. 55 (6), 894 (2009).
4. X. Che, Y. Che, Y. Huan, Y. Bai, D. Hu, and S. Feic, Acoust. Phys. 62 (2), 143 (2016).
5. B. R. Akhmetov and A. V. Vakhin, Acoust. Phys. 64 (5), 567 (2018).