"One other "lacking" part may revolutionize electronics - NEWPAPER24 - Newpaper24 - Global online News around the World". newpaper24.com.
2018년 6월 21일에 확인함.  “One other “lacking” part may revolutionize electronics - NEWPAPER24 - Newpaper24 - Global online News around the World”. 《newpaper24.com》.