New neighbours - VI. Spectroscopy of DENIS nearby stars candidatesF. Crifo, N. Phan-Bao, X. Delfosse, T. Forveille, J. Guibert, E. L. Martín and C. ReyléA&A, 441 2 (2005) 653-661DOI: https://doi.org/10.1051/0004-6361:20052998