Transport measurements on ultra-clean dual-gated suspended bilayer grapheneJ. Velasco Jr., L. Jing, Y. Lee, P. Kratz, W. Bao, D. Smirnov, M. Bockrath and C. N. LauEPJ Web of Conferences, 23 (2012) 00018DOI: https://doi.org/10.1051/epjconf/20122300018