HI-rich dwarf galaxies in the Hydra I cluster - II. Spectroscopic data P. A. Duc, V. Cayatte, C. Balkowski, T. X. Thuan, P. Papaderos and W. van Driel A&A, 369 3 (2001) 763-777 Published online: 15 April 2001 DOI: 10.1051/0004-6361:20010188