“Strain-induced pseudo-magnetic fields and charging effects on CVD-grown graphene” N.-C. Yeh, M. L. Teague, S. Yeom, B. L. Standley, R. T.-P. Wu, D. A. Boyd and M. W. Bockrath, Surface Science 605 1649-1656 (2011); DOI:10.1016/j.susc.2011.03.025. [arXiv:1009.0081]
http://www.sciencedirect.com/science/article/pii/S0039602811002275