Olijnichenko, L., V. Hruban, M. Lichuk, and V. Pirogov. “On the Limited Accuracy of Balancing the Axial Fan Impeller by Automatic Ball Balancers”. Eastern-European Journal of Enterprise Technologies, vol. 1, no. 1 (91), Feb. 2018, pp. 27-35, doi:10.15587/1729-4061.2018.123025.