Li, Haoyu Efficient cleaning extraction of silver from spent symbiosis lead-zinc mine assisted by ultrasound in sodium thiosulfate system. [electronic resource] - Ultrasonics sonochemistry Dec 2018 - 118-127 p. digital Publication Type: Journal Article ISSN: 1873-2828 Standard No.: 10.1016/j.ultsonch.2018.07.034 doi