Hines, T., Diez-Perez, I., Hihath, J., Liu, H. M., Wang, Z. S., Zhao, J. W., Zhou, G., Müllen, K., & Tao, N. J. (2010). Transition from Tunneling to Hopping in Single Molecular Junctions by Measuring Length
and Temperature Dependence. Journal of the American Chemical Society, 132(33),
11658-11664.