@article{SacepeOostingaLietal.2011,
  author    = {Benjamin Sac{\´e}p{\´e} and Jeroen B. Oostinga and Jian Li and Alberto Ubaldini and Nuno J. G. Couto and Enrico Giannini and Alberto F. Morpurgo},
  title     = {Gate-tuned normal and superconducting transport at the surface of a topological insulator},
  journal   = {Nature Communications},
  volume    = {2},
  doi       = {10.1038/ncomms1586},
  year      = {2011},
}