Rectification due to harmonic mixing of two coherent electromagnetic waves with commensurate frequencies in carbon nanotubesSulemana S. Abukari, Kofi W. Adu, Samuel Y. Mensah, Natalia G. Mensah, Musah Rabiu, Anthony Twum, Mathew Amekpewu and Kwadwo A. DomprehEur. Phys. J. B, 86 3 (2013) 106DOI: https://doi.org/10.1140/epjb/e2013-30011-3