ExOne Article - ExOne says it's on track, still educating analysts and customers www.bizjournals.com/pittsburgh/blog/innovation/2013/05/exone-says-its-on-track-still.html?page=all http://www.bizjournals.com/pittsburgh/blog/innovation/2013/05/exone-says-its-on-track-still.html?page=all