Water emission in NGC 1333–IRAS 4 - The physical structure of the envelope S. Maret, C. Ceccarelli, E. Caux, A. G. G. M. Tielens and A. Castets A&A, 395 2 (2002) 573-585 Published online: 14 November 2002 DOI: 10.1051/0004-6361:20021334