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@ARTICLE{Stopic:822293,
      author       = {Stopic, Srecko and Friedrich, Bernd},
      title        = {{A}dvances in {U}nderstanding of the {A}pplication of
                      {U}nit {O}perations in {M}etallurgy of {R}are {E}arth
                      {E}lements},
      journal      = {Metals : open access journal},
      volume       = {11},
      number       = {6},
      issn         = {2075-4701},
      address      = {Basel},
      publisher    = {MDPI},
      reportid     = {RWTH-2021-06656},
      pages        = {978},
      year         = {2021},
      note         = {In Virtual Special Issue : Extractive Metallurgy},
      cin          = {522610 / 520000},
      ddc          = {530},
      cid          = {$I:(DE-82)522610_20140620$ / $I:(DE-82)520000_20140620$},
      typ          = {PUB:(DE-HGF)16 / PUB:(DE-HGF)7},
      UT           = {WOS:000666745300001},
      doi          = {10.3390/met11060978},
      url          = {https://publications.rwth-aachen.de/record/822293},
}