A. Gloter, I. Palacio, A. Celis, M.N. Nair, A. Zobelli, M. Sicot, D. Malterre, M.S. Nevius, W.A. de Heer, C. Berger, E.H. Conrad, A. Taleb-Ibrahimi and A. Tejeda, STEM and EELS investigation of graphene nanoribbons epitaxially grown over SiC, European Microscopy Congress Proceedings, 2016, 429-430.