www.fgi.fi

Anchor text: Finnish Geodetic Institute.

Wikipedia: Henrik Johan Walbeck

Anchor text: Position information of the GPS station

Wikipedia: Tuorla Observatory

Anchor text: Finnish Geospatial Research Institute web page

Wikipedia: Finnish Geospatial Research Institute

Anchor text: Markku Poutanen

Wikipedia: Fundamental Astronomy

Anchor text: Nummela Standard Baseline – The Finnish Geospatial Research Institute

Wikipedia: Nummela Standard Baseline

Wikipedia: Nummela Standard Baseline

Anchor text: Research projects

Wikipedia: Projectnet