Interlayer electronic coupling observed by polarization dependent coherently controlled photocurrent generation in multilayer epitaxial graphene - Dong Sun; Julien Rioux; J.E. Sipe; Claire Berger; Walt De Heer; Theodore B. Norris (2011 Conference on Lasers and Electro-Optics: Laser Science to Photonic Applications, CLEO 2011, 2011)