Multiple shocks around the low-luminosity protostar IRAS 16293-2422 A. Castets, C. Ceccarelli, L. Loinard, E. Caux and B. Lefloch A&A, 375 1 (2001) 40-53 Published online: 15 August 2001 DOI: 10.1051/0004-6361:20010662