| 1 | Graphene: Properties, Preparation, Characterisation and Devices, 1st Ed., V .Skakalova and A. Kaiser, Elsevier Ltd., Cambridge, 2014. |
| 2 | Materials Characterization: Introduction to Microscopic and Spectroscopic Methods, 2nd Edition, Yang Leng, Wiley-VCH Verlag GmbH & Co, Weinheim, 2013. |