H i observations of galaxies in the Virgo and Coma clusters W. van Driel, D. Ragaigne, A. Boselli, J. Donas and G. Gavazzi Astron. Astrophys. Suppl. Ser., 144 3 (2000) 463-468 Published online: 15 June 2000 DOI: 10.1051/aas:2000220