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Scientific Papers about GPS research (old)

ION GPS congres paper 1998 - water vapor estimation using GPS

GPS nieuwsbrief 2000 - water vapor estimation using GPS

Journal Geophysical Research 2000 - water vapor estimation using GPS with KNMI

Earth and Planetary Science Letters 2005 - Tectonic research with GPS in Romania

Educational materials

ANW lesmateriaal astronomie (Dutch)

Newspaper and articles

Article in Astrobulletin (March 2011) about astrophotography

Article in newspaper about Night of darkness in Papendrecht

Workflow description for lunar/solar images