Observation of excited states in a graphene double quantum dotF. Molitor, H. Knowles, S. Dröscher, U. Gasser, T. Choi, P. Roulleau, J. Güttinger, A. Jacobsen, C. Stampfer, K. Ensslin and T. IhnEPL, 89 6 (2010) 67005DOI: https://doi.org/10.1209/0295-5075/89/67005
