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• Calcium extraction from Estonian industrial wastes based on ammonium solventsTamm, Kadriann; Viires, Regiina; Kuusik, Rein, keemik; Uibu, MaiEnergy and sustainability VII2018 / p. 465-476 : ill https://doi.org/10.2495/ESUS170431 https://www.scopus.com/sourceid/5700191202 https://www.scopus.com/record/display.uri?eid=2-s2.0-85047943585&origin=inward&txGid=ebaa676675eec9c86e57f3cc7456d424 https://www.webofscience.com/wos/woscc/full-record/WOS:000450031900044