@article{UBHD-67874596,
  author={Mertens, Christian and Wiens, Daniel and Steveling, Helmut and Sander, Anja and Freier, Kolja},
  title={Maxillary sinus-floor elevation with nanoporous biphasic bone graft material for early implant placement},
  year={2014},
  pages={365-373},
  language={eng},
  issn={1708-8208},
  volume={16},
  number={3},
  note={Gesehen am 18.09.2015 ; First published: 15 August 2012},
  journal={Clinical implant dentistry and related research},
  doi={10.1111/j.1708-8208.2012.00484.x},
}
@book{UBHD-67665314,
  author={Wiens, Daniel},
  title={Retrospektive Erfolgsanalyse von externen Sinusbodenaugmentationen mit einem nanokristallinen, biphasischen, synthetischen Knochenersatzmaterial},
  year={2014},
  pages={V, 101 Bl.},
  language={ger},
  library={UB [Signatur: 2014 U 749]},
}