Spectroscopic characterization of the protocluster of galaxies around 7C 1756+6520 at z ~ 1.4V. Casasola, L. Magrini, F. Combes, E. Sani, J. Fritz, G. Rodighiero, B. Poggianti, S. Bianchi and E. LiuzzoA&A, 618 (2018) A128DOI: https://doi.org/10.1051/0004-6361/201833052