Direct evidence of a bulk nodal gap in the overdoped regime of Y0.9Ca0.1Ba2Cu3O7−δ thin films from THz spectroscopyN. Bachar, E. Farber, E. Zhukova, B. Gorshunov and M. RothEPL, 104 6 (2013) 67006DOI: https://doi.org/10.1209/0295-5075/104/67006