► Educational materials
ANW lesmateriaal astronomie (Dutch)
Uitleg Speciale Relativiteitstheorie
Article about astrophotography in the classroom in the NVOX for Dutch science teachers…
Co-author of Dutch Physics books ‘Natuurkunde Overal‘
► Astronomical Photo of the Day
► Lunar photo of the day
► Ciel et Espace
► Astronomy Magazine
► Sky at night magazine
► Bad Astronomy Blog
► Sky and Telescope
► Space.com
► Spaceweather.com
► Heelal
► Zenit
Zenit December 2013 (Nova DEL 2013)
Zenit March 2013 (cover image and article)
Zenit December 2013 article about Nova DEL 2013
► Astrobulletin
► Newspapers
Article in newspaper about Night of darkness in Papendrecht
Article in newspaper about exhibition in town hall Hendrik-Ido-Ambacht
Article in NRC (Dutch Newspaper) about Hubble competition (28/08/2012)
Article in ‘De Ingenieur’ (21/12/2012)
Article about Night of the darkness in Ridderkerk 2012
Article about exhibition in Utrecht in AD/Dordtenaar (21/06/2013)
Article about ‘astronomy photographer of the year 2013’ in AD/Dordtenaar (09/08/2013)
Article in the Volkskrant 28/03/2015 about astrophotography
Article in AD/Dordtenaar about my book ‘Treasures of the Universe’
► Scientific papers
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
Physics and chemistry of the Earth 2002 – Tropospheric delay estimation using GPS and InSAR
Earth and Planetary Science Letters 2005 – Tectonic research with GPS in Romania
