Albar, J.D., Summerfield, Alex, Cheng, Tin S., Davies, Andrew, Smith, E.F., Khlobystov, Andrei N., Mellor, C.J., Taniguchi, Takashi, Watanabe, Kenji, Foxon, C.T., Eaves, Laurence, Beton, Peter H., Novikov, Sergei V., "An atomic carbon source for high temperature molecular beam epitaxy of graphene", Scientific Reports,