Yatsun, Volodymyr, Gennadiy Filimonikhin, Irina Filimonikhina, and Antonina Haleeva. 2021. “Determining the Energy Efficiency of a Resonance Single-Mass Vibratory Machine Whose Operation Is Based on the Sommerfeld Effect”. Eastern-European Journal of Enterprise Technologies 5 (7 (113):44-51. https://doi.org/10.15587/1729-4061.2021.241950.