Sulphur chemistry and molecular shocks: The case of NGC 1333-IRAS 2 V. Wakelam, C. Ceccarelli, A. Castets, B. Lefloch, L. Loinard, A. Faure, N. Schneider and J.-J. Benayoun A&A, 437 1 (2005) 149-158 Published online: 10 June 2005 DOI: 10.1051/0004-6361:20042566