X xtsili Senior Member 2 November 2010 631 8 July 2015 #1 http://news.in.gr/science-technology/article/?aid=1500011047
Dr Pan K Supreme Member 18 December 2010 9,067 8 July 2015 #2 http://www.gizmag.com/graphene-speaker-beats-sennheiser-mx400/31660/