1. Dresselhaus, M.S., Jorio, A., Souza, A.G., Saito, R.: Defect characterization in graphene and carbon nanotubes using Raman spectroscopy. Philos. Trans. R. Soc. A 368(1932), 5355–5377 (2010). doi: 10.1098/rsta.2010.0213
2. Ferrari, A.C.: Raman spectroscopy of graphene and graphite: disorder, electron–phonon coupling, doping and nonadiabatic effects. Solid State Commun. 143(1–2), 47–57 (2007). doi: 10.1016/j.ssc.2007.03.052
3. Ferrari, A.C., Basko, D.M.: Raman spectroscopy as a versatile tool for studying the properties of graphene. Nat. Nanotechnol. 8(4), 235–246 (2013). doi: 10.1038/nnano.2013.46
4. Ferrari, A.C., Meyer, J.C., Scardaci, V., Casiraghi, C., Lazzeri, M., Mauri, F., Piscanec, S., Jiang, D., Novoselov, K.S., Roth, S., Geim, A.K.: Raman spectrum of graphene and graphene layers. Phys. Rev. Lett. (2006). doi: 10.1103/Physrevlett.97.187401
5. Khan, M.F., Iqbal, M.Z., Iqbal, M.W., Eom, J.: Improving the electrical properties of graphene layers by chemical doping. Sci. Technol. Adv. Mater. (2014). doi: 10.1088/1468-6996/15/5/055004