@article {10684, title = {Stone-Wales defects in graphene and other planar s p2 -bonded materials}, journal = {Physical Review B - Condensed Matter and Materials Physics}, year = {2009}, doi = {10.1103/PhysRevB.80.033407}, author = {Jie Ma and Dario Alf{\`e} and Angelos Michaelides and Enge Wang} }