Presentatie SHO KIVI 2014
Typo3 in nl, typo3 congres, 28 oktober 2014
Presentatie stichting hergebruik overheid&ict 2013
Presentation our world is open inspire gwf 2015
Boundless presentation gwf 2015
Open data business model: tussen publiek en privaat, Madurodam, 13 sept 2011
FOSS4G 2017 Boston LocationTech; Big Data at the Heart of Geospatial Innovation