Popular Mechanics USA – April 2006
Popular Mechanics USA – May 2013
Popular Mechanics USA – May 2010
Discover – July-August 2011
Popular Mechanics USA – January 2010
Popular Mechanics USA – October 2008
Popular Mechanics USA – May 2005
Cell – 25 April 2013
Popular Mechanics USA – April 2005
Popular Mechanics USA – September 2008
Popular Mechanics USA – September 2010
Popular Mechanics USA – June 2009
Servo – September 2011
Popular Mechanics USA – June 2004
Popular Mechanics USA – January 2011
Zeit Wissen – Dezember-Januar 2013
Cell – 18 March 2013
Servo – December 2012
Popular Mechanics USA – January 2006
Popular Mechanics USA – April 2010
Servo – March 2012
Popular Mechanics USA – October 2005
Popular Mechanics USA – July 2011
Cell – 28 March 2013
Discover – April 2011
Popular Mechanics USA – December 2011
Cell – 11 April 2013
Popular Mechanics USA – December 2008
Popular Mechanics USA – October 2009
Popular Mechanics USA – August 2007
Discover – July-August 2012
Popular Mechanics USA – October 2011
Immunity – April 2013
Popular Mechanics USA – July 2007
Popular Mechanics USA – December 2006
Popular Mechanics USA – April 2012
Popular Mechanics USA – July 2010
Discover – September 2011
Servo – March 2011
Popular Mechanics USA – Home & DIY Guide 2010
