Malanchuk, Z., V. Korniyenko, Y. Malanchuk, and A. Khrystyuk. “Results of Experimental Studies of Amber Extraction by Hydromechanical Method in Ukraine”. Eastern-European Journal of Enterprise Technologies, vol. 3, no. 10(81), June 2016, pp. 24-28, doi:10.15587/1729-4061.2016.72404.