Nodes of the superconducting gap probed by electronic Raman scattering in HgBa2CaCu2O6+δ single crystalsA. Sacuto, R. Combescot, N. Bontemps, P. Monod, V. Viallet and D. ColsonEurophys. Lett., 39 2 (1997) 207-212DOI: https://doi.org/10.1209/epl/i1997-00336-3