Optical validation and characterization of Planck PSZ2 sources at the Canary Islands observatories - II. Second year of LP15 observationsA. Aguado-Barahona, R. Barrena, A. Streblyanska, A. Ferragamo, J. A. Rubiño-Martín, D. Tramonte and H. LietzenA&A, 631 (2019) A148DOI: https://doi.org/10.1051/0004-6361/201936034