Lastochkin, Pavel, Nilufar Parpieva, Juramirza Kayumov, and Doniyor Parpiyev. 2025. “THEORY OF TORSIONAL VIBRATIONS OF GROOVED CYLINDERS”. Scientific and Technical Journal of Namangan Institute of Engineering and Technology 10 (3):71-82. https://doi.org/10.61151/stjniet.v10i3.859.