Identification of the process of hydromechanical extraction of amberZinovii Malanchuk, Valerii Korniyenko, Yevhenii Malanchuk, Andriy Khrystyuk and Mykola KozyarE3S Web Conf., 166 (2020) 02008DOI: https://doi.org/10.1051/e3sconf/202016602008
