erc: who: Sumanasekera, Gamini U. what: Charge transfer equilibria in ambient-exposed epitaxial graphene on (0001) 6 H-SiC when: 20120605 where: https://digital.library.unt.edu/ark:/67531/metadc132974/ erc-support: who: University of North Texas Libraries what: Permanent: Stable Content: when: 20081203 where: https://digital.library.unt.edu/ark:/67531/