"Rapid Responses", Engineering (July/August 2008), p. 44 - 46
"Mini-helicopters With Fuel Cells", Science daily (web), 11th June 2008)
20th June 2007: Swiss Television SF1, "10vor10 news"
http://www.swissinfo.ch/eng/search/swissinfo.html?siteSect=881&sid=8370932