@article{jorio2014opticalphonon,
  title = {{Optical-Phonon Resonances with Saddle-Point Excitons in Twisted-Bilayer Graphene}},
  author = {Ado Jorio and Mark Kasperczyk and Nick Clark and Elke Neu and Patrick Maletinsky and Aravind Vijayaraghavan and Lukas Novotny},
  journal = {Nano Letters},
  year = {2014},
  volume = {14},
  number = {10},
  pages = {5687--5692},
  doi = {10.1021/nl502412g}
}