• 

  Villa Amalia, Briller Straße, Wuppertal

  http://360.haifischbar.de/panoramen/beispiele/villaamalia.html

  Virtual tour generated by 360.haifischbar.de

• 

  GFZ Potsdam - Publications

  https://web.archive.org/web/20121014005826/http://www3.gfz-potsdam.de/gfzFrames/extern-publications-authors?authors=Friis-Christ

  GFZ, Publication Information, generated from Data Base Content

• 

  Das Webforum als "besonders gefährliche Einrichtung" | Telepolis

  https://www.heise.de/tp/features/Das-Webforum-als-besonders-gefaehrliche-Einrichtung-3406025.html

  Heise-Urteil: LG Hamburg bremst User Generated Content

• 

  GFZ Potsdam - Publications

  https://web.archive.org/web/20121014005826/http://www3.gfz-potsdam.de/gfzFrames/extern-publications-authors?authors=Friis-Christensen&fname=E.&lang=en

  GFZ, Publication Information, generated from Data Base Content

• 

  Angiosperm families - Lentibulariaceae Rich.

  http://www.delta-intkey.com/angio/www/lentibul.htm

  Description of Lentibulariaceae Rich., generated from a DELTA database.

• 

  Angiosperm families - Bignoniaceae Juss.

  http://www.delta-intkey.com/angio/www/bignonia.htm

  Description of Bignoniaceae Juss., generated from a DELTA database.

• 

  Angiosperm families - Orobanchaceae Vent.

  http://www.delta-intkey.com/angio/www/orobanch.htm

  Description of Orobanchaceae Vent., generated from a DELTA database.

• 

  Angiosperm families - Labiatae Juss.

  http://www.delta-intkey.com/angio/www/labiatae.htm

  Description of Labiatae Juss., generated from a DELTA database.

• 

  Angiosperm families - Gesneriaceae Dum.

  http://www.delta-intkey.com/angio/www/gesneria.htm

  Description of Gesneriaceae Dum., generated from a DELTA database.

• 

  Angiosperm families - Cornaceae Dum.

  https://www.delta-intkey.com/angio/www/cornacea.htm

  Description of Cornaceae Dum., generated from a DELTA database.

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